16687028961 has 12 divisors (see below), whose sum is σ = 24112158720. Its totient is φ = 11120683320.

The previous prime is 16687028957. The next prime is 16687029001. The reversal of 16687028961 is 16982078661.

It is not a de Polignac number, because 16687028961 - 2² = 16687028957 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16687028898 and 16687028907.

It is not an unprimeable number, because it can be changed into a prime (16687028921) 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, 307041 + ... + 357278.

It is an arithmetic number, because the mean of its divisors is an integer number (2009346560).

Almost surely, 2^16687028961 is an apocalyptic number.

It is an amenable number.

16687028961 is a deficient number, since it is larger than the sum of its proper divisors (7425129759).

16687028961 is a wasteful number, since it uses less digits than its factorization.

16687028961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667116 (or 667113 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 16687028961 in words is "sixteen billion, six hundred eighty-seven million, twenty-eight thousand, nine hundred sixty-one".