40645256624 has 20 divisors (see below), whose sum is σ = 90000211344. Its totient is φ = 17419395648.

The previous prime is 40645256623. The next prime is 40645256629. The reversal of 40645256624 is 42665254604.

40645256624 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (40645256623) 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, 181451927 + ... + 181452150.

Almost surely, 2^40645256624 is an apocalyptic number.

It is an amenable number.

40645256624 is an abundant number, since it is smaller than the sum of its proper divisors (49354954720).

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

40645256624 is a wasteful number, since it uses less digits than its factorization.

40645256624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362904092 (or 362904086 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 44.

The spelling of 40645256624 in words is "forty billion, six hundred forty-five million, two hundred fifty-six thousand, six hundred twenty-four".