40040256624 has 20 divisors (see below), whose sum is σ = 103437329736. Its totient is φ = 13346752192.

The previous prime is 40040256623. The next prime is 40040256661. The reversal of 40040256624 is 42665204004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40040256623) 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, 417085959 + ... + 417086054.

Almost surely, 2^40040256624 is an apocalyptic number.

It is an amenable number.

40040256624 is an abundant number, since it is smaller than the sum of its proper divisors (63397073112).

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

40040256624 is a wasteful number, since it uses less digits than its factorization.

40040256624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834172024 (or 834172018 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 33.

The spelling of 40040256624 in words is "forty billion, forty million, two hundred fifty-six thousand, six hundred twenty-four".