102159855254520 has 320 divisors, whose sum is σ = 413077444876800. Its totient is φ = 22121833224960.

The previous prime is 102159855254497. The next prime is 102159855254531. The reversal of 102159855254520 is 25452558951201.

102159855254520 is a `hidden beast` number, since 1 + 0 + 2 + 1 + 5 + 98 + 5 + 5 + 2 + 545 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 118105996 + ... + 118967835.

It is an arithmetic number, because the mean of its divisors is an integer number (1290867015240).

Almost surely, 2^{102159855254520} is an apocalyptic number.

102159855254520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102159855254520 is an abundant number, since it is smaller than the sum of its proper divisors (310917589622280).

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

102159855254520 is a wasteful number, since it uses less digits than its factorization.

102159855254520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237073880 (or 237073867 counting only the distinct ones).

The product of its (nonzero) digits is 7200000, while the sum is 54.

The spelling of 102159855254520 in words is "one hundred two trillion, one hundred fifty-nine billion, eight hundred fifty-five million, two hundred fifty-four thousand, five hundred twenty".