118618828515 has 32 divisors (see below), whose sum is σ = 230048640000. Its totient is φ = 57512158560.

The previous prime is 118618828481. The next prime is 118618828529. The reversal of 118618828515 is 515828816811.

118618828515 is a `hidden beast` number, since 1 + 1 + 8 + 618 + 8 + 2 + 8 + 5 + 15 = 666.

It is not a de Polignac number, because 118618828515 - 2¹⁹ = 118618304227 is a prime.

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, 39937515 + ... + 39940484.

It is an arithmetic number, because the mean of its divisors is an integer number (7189020000).

Almost surely, 2^118618828515 is an apocalyptic number.

118618828515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

118618828515 is a deficient number, since it is larger than the sum of its proper divisors (111429811485).

118618828515 is a wasteful number, since it uses less digits than its factorization.

118618828515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79878024 (or 79878018 counting only the distinct ones).

The product of its digits is 1228800, while the sum is 54.

The spelling of 118618828515 in words is "one hundred eighteen billion, six hundred eighteen million, eight hundred twenty-eight thousand, five hundred fifteen".