40636255572 has 72 divisors (see below), whose sum is σ = 112350551040. Its totient is φ = 12281819520.

The previous prime is 40636255531. The next prime is 40636255619. The reversal of 40636255572 is 27555263604.

40636255572 is a `hidden beast` number, since 4 + 0 + 636 + 2 + 5 + 5 + 5 + 7 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17704 + ... + 285632.

It is an arithmetic number, because the mean of its divisors is an integer number (1560424320).

Almost surely, 2^40636255572 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40636255572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56175275520).

40636255572 is an abundant number, since it is smaller than the sum of its proper divisors (71714295468).

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

40636255572 is a wasteful number, since it uses less digits than its factorization.

40636255572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268333 (or 268328 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 45.

The spelling of 40636255572 in words is "forty billion, six hundred thirty-six million, two hundred fifty-five thousand, five hundred seventy-two".