102542645502 has 48 divisors (see below), whose sum is σ = 245693745648. Its totient is φ = 30647859840.

The previous prime is 102542645477. The next prime is 102542645521. The reversal of 102542645502 is 205546245201.

102542645502 is a `hidden beast` number, since 1 + 0 + 2 + 5 + 4 + 2 + 645 + 5 + 0 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3532753 + ... + 3561660.

It is an arithmetic number, because the mean of its divisors is an integer number (5118619701).

Almost surely, 2^102542645502 is an apocalyptic number.

102542645502 is an abundant number, since it is smaller than the sum of its proper divisors (143151100146).

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

102542645502 is a wasteful number, since it uses less digits than its factorization.

102542645502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7094505 (or 7094502 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The spelling of 102542645502 in words is "one hundred two billion, five hundred forty-two million, six hundred forty-five thousand, five hundred two".