40656660764 has 12 divisors (see below), whose sum is σ = 71343025824. Its totient is φ = 20272939104.

The previous prime is 40656660727. The next prime is 40656660767. The reversal of 40656660764 is 46706665604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40656660767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13846169 + ... + 13849104.

It is an arithmetic number, because the mean of its divisors is an integer number (5945252152).

Almost surely, 2^40656660764 is an apocalyptic number.

It is an amenable number.

40656660764 is a deficient number, since it is larger than the sum of its proper divisors (30686365060).

40656660764 is a wasteful number, since it uses less digits than its factorization.

40656660764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27695644 (or 27695642 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 50.

The spelling of 40656660764 in words is "forty billion, six hundred fifty-six million, six hundred sixty thousand, seven hundred sixty-four".