36685264638 has 64 divisors (see below), whose sum is σ = 87916492800. Its totient is φ = 10073748960.

The previous prime is 36685264633. The next prime is 36685264639. The reversal of 36685264638 is 83646258663.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36685264633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 607128 + ... + 664811.

It is an arithmetic number, because the mean of its divisors is an integer number (1373695200).

Almost surely, 2^36685264638 is an apocalyptic number.

36685264638 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

36685264638 is an abundant number, since it is smaller than the sum of its proper divisors (51231228162).

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

36685264638 is a wasteful number, since it uses less digits than its factorization.

36685264638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271997.

The product of its digits is 29859840, while the sum is 57.

The spelling of 36685264638 in words is "thirty-six billion, six hundred eighty-five million, two hundred sixty-four thousand, six hundred thirty-eight".