538811136865 has 32 divisors (see below), whose sum is σ = 683355340800. Its totient is φ = 407202586560.

The previous prime is 538811136859. The next prime is 538811136901. The reversal of 538811136865 is 568631118835.

It is not a de Polignac number, because 538811136865 - 2²⁵ = 538777582433 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, 11700756 + ... + 11746714.

It is an arithmetic number, because the mean of its divisors is an integer number (21354854400).

Almost surely, 2^538811136865 is an apocalyptic number.

It is an amenable number.

538811136865 is a deficient number, since it is larger than the sum of its proper divisors (144544203935).

538811136865 is a wasteful number, since it uses less digits than its factorization.

538811136865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47797.

The product of its digits is 4147200, while the sum is 55.

The spelling of 538811136865 in words is "five hundred thirty-eight billion, eight hundred eleven million, one hundred thirty-six thousand, eight hundred sixty-five".