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69742017958 = 21671932833823
BaseRepresentation
bin100000011110011110…
…0101011110110100110
320200000102220121001011
41000330330223312212
52120312424033313
652012233252434
75016162241264
oct1007474536646
9220012817034
1069742017958
1127639607378
121162456411a
136765b6ba62
14353865d434
151c32b5193d
hex103cf2bda6

69742017958 has 32 divisors (see below), whose sum is σ = 106186300416. Its totient is φ = 34351769088.

The previous prime is 69742017889. The next prime is 69742017997. The reversal of 69742017958 is 85971024796.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18240835 + ... + 18244657.

It is an arithmetic number, because the mean of its divisors is an integer number (3318321888).

Almost surely, 269742017958 is an apocalyptic number.

69742017958 is a deficient number, since it is larger than the sum of its proper divisors (36444282458).

69742017958 is a wasteful number, since it uses less digits than its factorization.

69742017958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4468.

The product of its (nonzero) digits is 7620480, while the sum is 58.

The spelling of 69742017958 in words is "sixty-nine billion, seven hundred forty-two million, seventeen thousand, nine hundred fifty-eight".

Divisors: 1 2 167 193 283 334 386 566 3823 7646 32231 47261 54619 64462 94522 109238 638441 737839 1081909 1276882 1475678 2163818 9121373 18242746 123219113 180678803 208808437 246438226 361357606 417616874 34871008979 69742017958