16157521692 has 36 divisors (see below), whose sum is σ = 43984365880. Its totient is φ = 4971544992.

The previous prime is 16157521691. The next prime is 16157521711. The reversal of 16157521692 is 29612575161.

It is a happy number.

16157521692 is a `hidden beast` number, since 1 + 61 + 5 + 7 + 521 + 69 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×16157521692² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16157521691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17261842 + ... + 17262777.

Almost surely, 2^16157521692 is an apocalyptic number.

16157521692 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16157521692 is an abundant number, since it is smaller than the sum of its proper divisors (27826844188).

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

16157521692 is a wasteful number, since it uses less digits than its factorization.

16157521692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34524642 (or 34524637 counting only the distinct ones).

The product of its digits is 226800, while the sum is 45.

The spelling of 16157521692 in words is "sixteen billion, one hundred fifty-seven million, five hundred twenty-one thousand, six hundred ninety-two".