40424664456 has 72 divisors (see below), whose sum is σ = 120341356590. Its totient is φ = 12249895680.

The previous prime is 40424664433. The next prime is 40424664493. The reversal of 40424664456 is 65446642404.

It can be written as a sum of positive squares in only one way, i.e., 39177868356 + 1246796100 = 197934^2 + 35310^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2311345 + ... + 2328768.

Almost surely, 2^40424664456 is an apocalyptic number.

It is an amenable number.

40424664456 is an abundant number, since it is smaller than the sum of its proper divisors (79916692134).

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

40424664456 is a wasteful number, since it uses less digits than its factorization.

40424664456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4640147 (or 4640129 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 45.

The spelling of 40424664456 in words is "forty billion, four hundred twenty-four million, six hundred sixty-four thousand, four hundred fifty-six".