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16990189240320 = 21439541257
BaseRepresentation
bin1111011100111101011000…
…1100011100000000000000
32020011020122111112000000000
43313033112030130000000
54211331401421142240
6100045104000000000
73402333504464562
oct367172614340000
966136574460000
1016990189240320
11546055399040a
121aa4990000000
139632250543ba
1442a4883c3332
151e6e491b5430
hexf73d631c000

16990189240320 has 1200 divisors, whose sum is σ = 62897317626528. Its totient is φ = 4403012567040.

The previous prime is 16990189240319. The next prime is 16990189240351. The reversal of 16990189240320 is 2304298109961.

16990189240320 is a `hidden beast` number, since 1 + 69 + 9 + 0 + 18 + 9 + 240 + 320 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 66109685632 + ... + 66109685888.

Almost surely, 216990189240320 is an apocalyptic number.

16990189240320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16990189240320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31448658813264).

16990189240320 is an abundant number, since it is smaller than the sum of its proper divisors (45907128386208).

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

16990189240320 is an frugal number, since it uses more digits than its factorization.

16990189240320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The spelling of 16990189240320 in words is "sixteen trillion, nine hundred ninety billion, one hundred eighty-nine million, two hundred forty thousand, three hundred twenty".