40640462664 has 32 divisors (see below), whose sum is σ = 101733324000. Its totient is φ = 13529198592.

The previous prime is 40640462657. The next prime is 40640462711. The reversal of 40640462664 is 46626404604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1082554 + ... + 1119465.

It is an arithmetic number, because the mean of its divisors is an integer number (3179166375).

Almost surely, 2^40640462664 is an apocalyptic number.

It is an amenable number.

40640462664 is an abundant number, since it is smaller than the sum of its proper divisors (61092861336).

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

40640462664 is a wasteful number, since it uses less digits than its factorization.

40640462664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2202797 (or 2202793 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 42.

The spelling of 40640462664 in words is "forty billion, six hundred forty million, four hundred sixty-two thousand, six hundred sixty-four".