16931878552 has 16 divisors (see below), whose sum is σ = 33614759160. Its totient is φ = 7967942784.

The previous prime is 16931878517. The next prime is 16931878567. The reversal of 16931878552 is 25587813961.

It is a super-2 number, since 2×16931878552² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16931878493 and 16931878502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62249418 + ... + 62249689.

Almost surely, 2^16931878552 is an apocalyptic number.

It is an amenable number.

16931878552 is a deficient number, since it is larger than the sum of its proper divisors (16682880608).

16931878552 is a wasteful number, since it uses less digits than its factorization.

16931878552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124499130 (or 124499126 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 55.

The spelling of 16931878552 in words is "sixteen billion, nine hundred thirty-one million, eight hundred seventy-eight thousand, five hundred fifty-two".