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16319950972 = 221317193726261
BaseRepresentation
bin11110011001011111…
…01011000001111100
31120010100212102000121
433030233223001330
5231410401412342
611255225104324
71115265202663
oct171457530174
946110772017
1016319950972
116a15206796
1231b56280a4
13170114b030
14b0b659dda
15657b46067
hex3ccbeb07c

16319950972 has 96 divisors (see below), whose sum is σ = 35207887680. Its totient is φ = 6534328320.

The previous prime is 16319950963. The next prime is 16319950981. The reversal of 16319950972 is 27905991361.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16319950963) and next prime (16319950981).

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 608322 + ... + 634582.

It is an arithmetic number, because the mean of its divisors is an integer number (366748830).

Almost surely, 216319950972 is an apocalyptic number.

It is an amenable number.

16319950972 is an abundant number, since it is smaller than the sum of its proper divisors (18887936708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16319950972 is a wasteful number, since it uses less digits than its factorization.

16319950972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26351 (or 26349 counting only the distinct ones).

The product of its (nonzero) digits is 918540, while the sum is 52.

The spelling of 16319950972 in words is "sixteen billion, three hundred nineteen million, nine hundred fifty thousand, nine hundred seventy-two".

Divisors: 1 2 4 13 17 19 26 34 37 38 52 68 74 76 148 221 247 323 442 481 494 629 646 703 884 962 988 1258 1292 1406 1924 2516 2812 4199 8177 8398 9139 11951 16354 16796 18278 23902 26261 32708 36556 47804 52522 105044 155363 310726 341393 446437 498959 621452 682786 892874 971657 997918 1365572 1785748 1943314 1995836 3886628 5803681 6486467 8482303 11607362 12631541 12972934 16518169 16964606 18461483 23214724 25263082 25945868 33036338 33929212 36922966 50526164 66072676 73845932 110269939 214736197 220539878 239999279 313845211 429472394 441079756 479998558 627690422 858944788 959997116 1255380844 4079987743 8159975486 16319950972