115705565880 has 64 divisors (see below), whose sum is σ = 347397755040. Its totient is φ = 30829834752.

The previous prime is 115705565863. The next prime is 115705565993. The reversal of 115705565880 is 88565507511.

It is a super-2 number, since 2×115705565880² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241299 + ... + 538178.

Almost surely, 2^115705565880 is an apocalyptic number.

115705565880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115705565880 is an abundant number, since it is smaller than the sum of its proper divisors (231692189160).

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

115705565880 is a wasteful number, since it uses less digits than its factorization.

115705565880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780728 (or 780724 counting only the distinct ones).

The product of its (nonzero) digits is 1680000, while the sum is 51.

The spelling of 115705565880 in words is "one hundred fifteen billion, seven hundred five million, five hundred sixty-five thousand, eight hundred eighty".