102643306508 has 24 divisors (see below), whose sum is σ = 180067206144. Its totient is φ = 51195690000.

The previous prime is 102643306501. The next prime is 102643306553. The reversal of 102643306508 is 805603346201.

It is not an unprimeable number, because it can be changed into a prime (102643306501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2717891 + ... + 2755397.

It is an arithmetic number, because the mean of its divisors is an integer number (7502800256).

Almost surely, 2^102643306508 is an apocalyptic number.

It is an amenable number.

102643306508 is a deficient number, since it is larger than the sum of its proper divisors (77423899636).

102643306508 is a wasteful number, since it uses less digits than its factorization.

102643306508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39173 (or 39171 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 102643306508 in words is "one hundred two billion, six hundred forty-three million, three hundred six thousand, five hundred eight".