40779744636 has 24 divisors (see below), whose sum is σ = 100749957840. Its totient is φ = 12793645312.

The previous prime is 40779744617. The next prime is 40779744641. The reversal of 40779744636 is 63644797704.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99950151 + ... + 99950558.

It is an arithmetic number, because the mean of its divisors is an integer number (4197914910).

Almost surely, 2^40779744636 is an apocalyptic number.

It is an amenable number.

40779744636 is an abundant number, since it is smaller than the sum of its proper divisors (59970213204).

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

40779744636 is a wasteful number, since it uses less digits than its factorization.

40779744636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199900733 (or 199900731 counting only the distinct ones).

The product of its (nonzero) digits is 21337344, while the sum is 57.

The spelling of 40779744636 in words is "forty billion, seven hundred seventy-nine million, seven hundred forty-four thousand, six hundred thirty-six".