502565565138 has 128 divisors (see below), whose sum is σ = 1247378227200. Its totient is φ = 131445441792.

The previous prime is 502565565137. The next prime is 502565565223. The reversal of 502565565138 is 831565565205.

It is not an unprimeable number, because it can be changed into a prime (502565565133) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 42624148 + ... + 42635936.

It is an arithmetic number, because the mean of its divisors is an integer number (9745142400).

Almost surely, 2^502565565138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 502565565138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (623689113600).

502565565138 is an abundant number, since it is smaller than the sum of its proper divisors (744812662062).

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

502565565138 is a wasteful number, since it uses less digits than its factorization.

502565565138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12456.

The product of its (nonzero) digits is 5400000, while the sum is 51.

The spelling of 502565565138 in words is "five hundred two billion, five hundred sixty-five million, five hundred sixty-five thousand, one hundred thirty-eight".