40656660455516 has 24 divisors (see below), whose sum is σ = 82691512794240. Its totient is φ = 17128956220272.

The previous prime is 40656660455471. The next prime is 40656660455563. The reversal of 40656660455516 is 61555406665604.

It is a happy number.

It is a super-2 number, since 2×40656660455516² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12305282990 + ... + 12305286293.

It is an arithmetic number, because the mean of its divisors is an integer number (3445479699760).

Almost surely, 2^{40656660455516} is an apocalyptic number.

It is an amenable number.

40656660455516 is an abundant number, since it is smaller than the sum of its proper divisors (42034852338724).

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

40656660455516 is a wasteful number, since it uses less digits than its factorization.

40656660455516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24610569353 (or 24610569351 counting only the distinct ones).

The product of its (nonzero) digits is 77760000, while the sum is 59.

The spelling of 40656660455516 in words is "forty trillion, six hundred fifty-six billion, six hundred sixty million, four hundred fifty-five thousand, five hundred sixteen".