215876639068 has 24 divisors (see below), whose sum is σ = 398033484800. Its totient is φ = 102163243248.

The previous prime is 215876639051. The next prime is 215876639089. The reversal of 215876639068 is 860936678512.

It is a junction number, because it is equal to n+sod(n) for n = 215876638997 and 215876639015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1223958 + ... + 1389181.

Almost surely, 2^215876639068 is an apocalyptic number.

It is an amenable number.

215876639068 is a deficient number, since it is larger than the sum of its proper divisors (182156845732).

215876639068 is a wasteful number, since it uses less digits than its factorization.

215876639068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2614249 (or 2614247 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 61.

The spelling of 215876639068 in words is "two hundred fifteen billion, eight hundred seventy-six million, six hundred thirty-nine thousand, sixty-eight".