40544646512 has 20 divisors (see below), whose sum is σ = 78558435480. Its totient is φ = 20271501888.

The previous prime is 40544646479. The next prime is 40544646521. The reversal of 40544646512 is 21564644504.

It is a super-2 number, since 2×40544646512² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40544646512.

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, 629603 + ... + 691005.

It is an arithmetic number, because the mean of its divisors is an integer number (3927921774).

Almost surely, 2^40544646512 is an apocalyptic number.

It is an amenable number.

40544646512 is a deficient number, since it is larger than the sum of its proper divisors (38013788968).

40544646512 is a wasteful number, since it uses less digits than its factorization.

40544646512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102680 (or 102674 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 41.

The spelling of 40544646512 in words is "forty billion, five hundred forty-four million, six hundred forty-six thousand, five hundred twelve".