115212443520520 has 128 divisors (see below), whose sum is σ = 269050121303040. Its totient is φ = 44369748622080.

The previous prime is 115212443520497. The next prime is 115212443520547. The reversal of 115212443520520 is 25025344212511.

It is a super-2 number, since 2×115212443520520² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 115212443520520.

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, 584489899 + ... + 584686981.

It is an arithmetic number, because the mean of its divisors is an integer number (2101954072680).

Almost surely, 2^{115212443520520} is an apocalyptic number.

115212443520520 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 115212443520520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134525060651520).

115212443520520 is an abundant number, since it is smaller than the sum of its proper divisors (153837677782520).

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

115212443520520 is a wasteful number, since it uses less digits than its factorization.

115212443520520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201995 (or 201991 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 115212443520520 in words is "one hundred fifteen trillion, two hundred twelve billion, four hundred forty-three million, five hundred twenty thousand, five hundred twenty".