158015220507018 has 64 divisors (see below), whose sum is σ = 418756692049920. Its totient is φ = 43184283862896.

The previous prime is 158015220507007. The next prime is 158015220507059. The reversal of 158015220507018 is 810705022510851.

It is a happy number.

158015220507018 is a `hidden beast` number, since 1 + 5 + 8 + 0 + 1 + 522 + 0 + 50 + 70 + 1 + 8 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9087593130 + ... + 9087610517.

It is an arithmetic number, because the mean of its divisors is an integer number (6543073313280).

Almost surely, 2^{158015220507018} is an apocalyptic number.

158015220507018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

158015220507018 is an abundant number, since it is smaller than the sum of its proper divisors (260741471542902).

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

158015220507018 is a wasteful number, since it uses less digits than its factorization.

158015220507018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18175203688 (or 18175203682 counting only the distinct ones).

The product of its (nonzero) digits is 224000, while the sum is 45.

The spelling of 158015220507018 in words is "one hundred fifty-eight trillion, fifteen billion, two hundred twenty million, five hundred seven thousand, eighteen".