40864633049840 has 80 divisors (see below), whose sum is σ = 99155675969856. Its totient is φ = 15632873625600.

The previous prime is 40864633049813. The next prime is 40864633049873. The reversal of 40864633049840 is 4894033646804.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 40864633049840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10964210 + ... + 14210670.

Almost surely, 2^{40864633049840} is an apocalyptic number.

40864633049840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40864633049840 is an abundant number, since it is smaller than the sum of its proper divisors (58291042920016).

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

40864633049840 is a wasteful number, since it uses less digits than its factorization.

40864633049840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3253338 (or 3253332 counting only the distinct ones).

The product of its (nonzero) digits is 47775744, while the sum is 59.

The spelling of 40864633049840 in words is "forty trillion, eight hundred sixty-four billion, six hundred thirty-three million, forty-nine thousand, eight hundred forty".