40504412646 has 24 divisors (see below), whose sum is σ = 87858983160. Its totient is φ = 13486175136.

The previous prime is 40504412603. The next prime is 40504412713. The reversal of 40504412646 is 64621440504.

40504412646 is a `hidden beast` number, since 4 + 0 + 5 + 0 + 4 + 4 + 1 + 2 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 40504412646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1258311 + ... + 1290098.

It is an arithmetic number, because the mean of its divisors is an integer number (3660790965).

Almost surely, 2^40504412646 is an apocalyptic number.

40504412646 is an abundant number, since it is smaller than the sum of its proper divisors (47354570514).

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

40504412646 is a wasteful number, since it uses less digits than its factorization.

40504412646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2549300 (or 2549297 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The spelling of 40504412646 in words is "forty billion, five hundred four million, four hundred twelve thousand, six hundred forty-six".