40024646464 has 28 divisors (see below), whose sum is σ = 86644264608. Its totient is φ = 18193020800.

The previous prime is 40024646429. The next prime is 40024646471. The reversal of 40024646464 is 46464642004.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28425892 + ... + 28427299.

Almost surely, 2^40024646464 is an apocalyptic number.

40024646464 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40024646464 is an abundant number, since it is smaller than the sum of its proper divisors (46619618144).

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

40024646464 is a wasteful number, since it uses less digits than its factorization.

40024646464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56853214 (or 56853204 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 40.

The spelling of 40024646464 in words is "forty billion, twenty-four million, six hundred forty-six thousand, four hundred sixty-four".