102661525041520 has 80 divisors (see below), whose sum is σ = 251314896781440. Its totient is φ = 38893355165952.

The previous prime is 102661525041497. The next prime is 102661525041541. The reversal of 102661525041520 is 25140525166201.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2704882 + ... + 14582161.

It is an arithmetic number, because the mean of its divisors is an integer number (3141436209768).

Almost surely, 2^{102661525041520} is an apocalyptic number.

102661525041520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102661525041520 is an abundant number, since it is smaller than the sum of its proper divisors (148653371739920).

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

102661525041520 is a wasteful number, since it uses less digits than its factorization.

102661525041520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17290982 (or 17290976 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 40.

The spelling of 102661525041520 in words is "one hundred two trillion, six hundred sixty-one billion, five hundred twenty-five million, forty-one thousand, five hundred twenty".