45640640065 has 16 divisors (see below), whose sum is σ = 57158390016. Its totient is φ = 34919896000.

The previous prime is 45640640053. The next prime is 45640640093. The reversal of 45640640065 is 56004604654.

It is not a de Polignac number, because 45640640065 - 2¹⁷ = 45640508993 is a prime.

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, 883500 + ... + 933730.

It is an arithmetic number, because the mean of its divisors is an integer number (3572399376).

Almost surely, 2^45640640065 is an apocalyptic number.

It is an amenable number.

45640640065 is a deficient number, since it is larger than the sum of its proper divisors (11517749951).

45640640065 is a wasteful number, since it uses less digits than its factorization.

45640640065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58160.

The product of its (nonzero) digits is 345600, while the sum is 40.

The spelling of 45640640065 in words is "forty-five billion, six hundred forty million, six hundred forty thousand, sixty-five".