115786521720 has 96 divisors (see below), whose sum is σ = 389282306400. Its totient is φ = 29811699456.

The previous prime is 115786521689. The next prime is 115786521737. The reversal of 115786521720 is 27125687511.

115786521720 is a `hidden beast` number, since 1 + 1 + 57 + 8 + 6 + 521 + 72 + 0 = 666.

It is a super-2 number, since 2×115786521720² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5534892 + ... + 5555771.

It is an arithmetic number, because the mean of its divisors is an integer number (4055024025).

Almost surely, 2^115786521720 is an apocalyptic number.

115786521720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115786521720 is an abundant number, since it is smaller than the sum of its proper divisors (273495784680).

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

115786521720 is a wasteful number, since it uses less digits than its factorization.

115786521720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11090709 (or 11090702 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 45.

The spelling of 115786521720 in words is "one hundred fifteen billion, seven hundred eighty-six million, five hundred twenty-one thousand, seven hundred twenty".