102125646520 has 16 divisors (see below), whose sum is σ = 229782704760. Its totient is φ = 40850258592.

The previous prime is 102125646451. The next prime is 102125646613. The reversal of 102125646520 is 25646521201.

102125646520 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×102125646520² (a number of 23 digits) contains 22 as substring.

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, 1276570542 + ... + 1276570621.

Almost surely, 2^102125646520 is an apocalyptic number.

102125646520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102125646520 is an abundant number, since it is smaller than the sum of its proper divisors (127657058240).

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

102125646520 is a wasteful number, since it uses less digits than its factorization.

102125646520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553141174 (or 2553141170 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 34.

The spelling of 102125646520 in words is "one hundred two billion, one hundred twenty-five million, six hundred forty-six thousand, five hundred twenty".