102815896564 has 24 divisors (see below), whose sum is σ = 182223798848. Its totient is φ = 50754971520.

The previous prime is 102815896553. The next prime is 102815896591. The reversal of 102815896564 is 465698518201.

It is a super-2 number, since 2×102815896564² (a number of 23 digits) contains 22 as substring.

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, 240597 + ... + 513340.

Almost surely, 2^102815896564 is an apocalyptic number.

It is an amenable number.

102815896564 is a deficient number, since it is larger than the sum of its proper divisors (79407902284).

102815896564 is a wasteful number, since it uses less digits than its factorization.

102815896564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754375 (or 754373 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 55.

The spelling of 102815896564 in words is "one hundred two billion, eight hundred fifteen million, eight hundred ninety-six thousand, five hundred sixty-four".