102885694564 has 81 divisors (see below), whose sum is σ = 199188951507. Its totient is φ = 46489381488.

The previous prime is 102885694531. The next prime is 102885694619. The reversal of 102885694564 is 465496588201.

It is a happy number.

The square root of 102885694564 is 320758.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×102885694564² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102885694499 and 102885694508.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 280342309 + ... + 280342675.

Almost surely, 2^102885694564 is an apocalyptic number.

102885694564 is the 320758-th square number.

It is an amenable number.

102885694564 is a deficient number, since it is larger than the sum of its proper divisors (96303256943).

102885694564 is an equidigital number, since it uses as much as digits as its factorization.

102885694564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822 (or 411 counting only the distinct ones).

The product of its (nonzero) digits is 16588800, while the sum is 58.

It can be divided in two parts, 102885 and 694564, that added together give a square (797449 = 893²).

The spelling of 102885694564 in words is "one hundred two billion, eight hundred eighty-five million, six hundred ninety-four thousand, five hundred sixty-four".