115021195520 has 288 divisors, whose sum is σ = 352789952256. Its totient is φ = 34880716800.

The previous prime is 115021195519. The next prime is 115021195547. The reversal of 115021195520 is 25591120511.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3630950 + ... + 3662490.

It is an arithmetic number, because the mean of its divisors is an integer number (1224965112).

Almost surely, 2^115021195520 is an apocalyptic number.

115021195520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115021195520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176394976128).

115021195520 is an abundant number, since it is smaller than the sum of its proper divisors (237768756736).

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

115021195520 is a wasteful number, since it uses less digits than its factorization.

115021195520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31617 (or 31603 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 32.

The spelling of 115021195520 in words is "one hundred fifteen billion, twenty-one million, one hundred ninety-five thousand, five hundred twenty".