102170602117172 has 12 divisors (see below), whose sum is σ = 180568836415716. Its totient is φ = 50579505998400.

The previous prime is 102170602117163. The next prime is 102170602117211. The reversal of 102170602117172 is 271711206071201.

It can be written as a sum of positive squares in 2 ways, for example, as 70095641714596 + 32074960402576 = 8372314^2 + 5663476^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126448764593 + ... + 126448765400.

It is an arithmetic number, because the mean of its divisors is an integer number (15047403034643).

Almost surely, 2^{102170602117172} is an apocalyptic number.

It is an amenable number.

102170602117172 is a deficient number, since it is larger than the sum of its proper divisors (78398234298544).

102170602117172 is a wasteful number, since it uses less digits than its factorization.

102170602117172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252897530098 (or 252897530096 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 38.

Adding to 102170602117172 its reverse (271711206071201), we get a palindrome (373881808188373).

The spelling of 102170602117172 in words is "one hundred two trillion, one hundred seventy billion, six hundred two million, one hundred seventeen thousand, one hundred seventy-two".