40462996644 has 72 divisors (see below), whose sum is σ = 117274084928. Its totient is φ = 11523176640.

The previous prime is 40462996643. The next prime is 40462996661. The reversal of 40462996644 is 44669926404.

It is a happy number.

40462996644 is a `hidden beast` number, since 4 + 0 + 4 + 629 + 9 + 6 + 6 + 4 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (40462996643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 184147 + ... + 338874.

Almost surely, 2^40462996644 is an apocalyptic number.

It is an amenable number.

40462996644 is an abundant number, since it is smaller than the sum of its proper divisors (76811088284).

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

40462996644 is a wasteful number, since it uses less digits than its factorization.

40462996644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523345 (or 523340 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 54.

The spelling of 40462996644 in words is "forty billion, four hundred sixty-two million, nine hundred ninety-six thousand, six hundred forty-four".