115775715677220 has 36 divisors (see below), whose sum is σ = 351186337554780. Its totient is φ = 30873524180544.

The previous prime is 115775715677159. The next prime is 115775715677249. The reversal of 115775715677220 is 22776517577511.

It is a happy number.

115775715677220 is a `hidden beast` number, since 1 + 1 + 5 + 7 + 7 + 571 + 56 + 7 + 7 + 2 + 2 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 73971111617316 + 41804604059904 = 8600646^2 + 6465648^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 321599210035 + ... + 321599210394.

Almost surely, 2^{115775715677220} is an apocalyptic number.

115775715677220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115775715677220 is an abundant number, since it is smaller than the sum of its proper divisors (235410621877560).

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

115775715677220 is a wasteful number, since it uses less digits than its factorization.

115775715677220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643198420444 (or 643198420439 counting only the distinct ones).

The product of its (nonzero) digits is 50421000, while the sum is 63.

The spelling of 115775715677220 in words is "one hundred fifteen trillion, seven hundred seventy-five billion, seven hundred fifteen million, six hundred seventy-seven thousand, two hundred twenty".