40874065665 has 32 divisors (see below), whose sum is σ = 65563344000. Its totient is φ = 21744637440.

The previous prime is 40874065579. The next prime is 40874065669. The reversal of 40874065665 is 56656047804.

It is not a de Polignac number, because 40874065665 - 2⁷ = 40874065537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40874065669) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12388186 + ... + 12391484.

It is an arithmetic number, because the mean of its divisors is an integer number (2048854500).

Almost surely, 2^40874065665 is an apocalyptic number.

It is an amenable number.

40874065665 is a deficient number, since it is larger than the sum of its proper divisors (24689278335).

40874065665 is a wasteful number, since it uses less digits than its factorization.

40874065665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5137.

The product of its (nonzero) digits is 4838400, while the sum is 51.

The spelling of 40874065665 in words is "forty billion, eight hundred seventy-four million, sixty-five thousand, six hundred sixty-five".