115516420240 has 80 divisors (see below), whose sum is σ = 289291202928. Its totient is φ = 42643980288.

The previous prime is 115516420177. The next prime is 115516420241. The reversal of 115516420240 is 42024615511.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 294191104 + 115222229136 = 17152^2 + 339444^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (115516420241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9080124 + ... + 9092836.

Almost surely, 2^115516420240 is an apocalyptic number.

115516420240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115516420240 is an abundant number, since it is smaller than the sum of its proper divisors (173774782688).

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

115516420240 is a wasteful number, since it uses less digits than its factorization.

115516420240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21476 (or 21470 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The spelling of 115516420240 in words is "one hundred fifteen billion, five hundred sixteen million, four hundred twenty thousand, two hundred forty".