7138631535818 has 16 divisors (see below), whose sum is σ = 11244679096320. Its totient is φ = 3392382083376.

The previous prime is 7138631535793. The next prime is 7138631535821. The reversal of 7138631535818 is 8185351368317.

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 7 ways as a sum of consecutive naturals, for example, 494220938 + ... + 494235381.

It is an arithmetic number, because the mean of its divisors is an integer number (702792443520).

Almost surely, 2^{7138631535818} is an apocalyptic number.

7138631535818 is a deficient number, since it is larger than the sum of its proper divisors (4106047560502).

7138631535818 is a wasteful number, since it uses less digits than its factorization.

7138631535818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988456501.

The product of its digits is 14515200, while the sum is 59.

The spelling of 7138631535818 in words is "seven trillion, one hundred thirty-eight billion, six hundred thirty-one million, five hundred thirty-five thousand, eight hundred eighteen".