102521172193872 has 20 divisors (see below), whose sum is σ = 264846361500960. Its totient is φ = 34173724064608.

The previous prime is 102521172193861. The next prime is 102521172193889. The reversal of 102521172193872 is 278391271125201.

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, 1067928876972 + ... + 1067928877067.

It is an arithmetic number, because the mean of its divisors is an integer number (13242318075048).

Almost surely, 2^{102521172193872} is an apocalyptic number.

102521172193872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102521172193872 is an abundant number, since it is smaller than the sum of its proper divisors (162325189307088).

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

102521172193872 is a wasteful number, since it uses less digits than its factorization.

102521172193872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135857754050 (or 2135857754044 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 51.

The spelling of 102521172193872 in words is "one hundred two trillion, five hundred twenty-one billion, one hundred seventy-two million, one hundred ninety-three thousand, eight hundred seventy-two".