16156325668 has 18 divisors (see below), whose sum is σ = 32889663366. Its totient is φ = 6924139488.

The previous prime is 16156325621. The next prime is 16156325777. The reversal of 16156325668 is 86652365161.

It can be written as a sum of positive squares in only one way, i.e., 15833692224 + 322633444 = 125832^2 + 17962^2 .

It is a super-2 number, since 2×16156325668² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41214921 + ... + 41215312.

Almost surely, 2^16156325668 is an apocalyptic number.

It is an amenable number.

16156325668 is an abundant number, since it is smaller than the sum of its proper divisors (16733337698).

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

16156325668 is a wasteful number, since it uses less digits than its factorization.

16156325668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82430251 (or 82430242 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 49.

The spelling of 16156325668 in words is "sixteen billion, one hundred fifty-six million, three hundred twenty-five thousand, six hundred sixty-eight".