16878643672 has 16 divisors (see below), whose sum is σ = 34524498600. Its totient is φ = 7672110720.

The previous prime is 16878643669. The next prime is 16878643693. The reversal of 16878643672 is 27634687861.

It is a super-2 number, since 2×16878643672² (a number of 21 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 95901297 + ... + 95901472.

Almost surely, 2^16878643672 is an apocalyptic number.

It is an amenable number.

16878643672 is an abundant number, since it is smaller than the sum of its proper divisors (17645854928).

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

16878643672 is a wasteful number, since it uses less digits than its factorization.

16878643672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191802786 (or 191802782 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 58.

The spelling of 16878643672 in words is "sixteen billion, eight hundred seventy-eight million, six hundred forty-three thousand, six hundred seventy-two".