102165820508 has 48 divisors (see below), whose sum is σ = 187372555776. Its totient is φ = 48650479680.

The previous prime is 102165820501. The next prime is 102165820573. The reversal of 102165820508 is 805028561201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102165820501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29932610 + ... + 29936022.

It is an arithmetic number, because the mean of its divisors is an integer number (3903594912).

Almost surely, 2^102165820508 is an apocalyptic number.

It is an amenable number.

102165820508 is a deficient number, since it is larger than the sum of its proper divisors (85206735268).

102165820508 is a wasteful number, since it uses less digits than its factorization.

102165820508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4754 (or 4752 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 38.

The spelling of 102165820508 in words is "one hundred two billion, one hundred sixty-five million, eight hundred twenty thousand, five hundred eight".