40646506624 has 32 divisors (see below), whose sum is σ = 81427885200. Its totient is φ = 20209704192.

The previous prime is 40646506577. The next prime is 40646506627. The reversal of 40646506624 is 42660564604.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (40646506627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 864102 + ... + 909925.

Almost surely, 2^40646506624 is an apocalyptic number.

It is an amenable number.

40646506624 is an abundant number, since it is smaller than the sum of its proper divisors (40781378576).

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

40646506624 is a wasteful number, since it uses less digits than its factorization.

40646506624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774220 (or 1774208 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 40646506624 in words is "forty billion, six hundred forty-six million, five hundred six thousand, six hundred twenty-four".