40515764765 has 16 divisors (see below), whose sum is σ = 56475373440. Its totient is φ = 27326790720.

The previous prime is 40515764761. The next prime is 40515764767. The reversal of 40515764765 is 56746751504.

It is not a de Polignac number, because 40515764765 - 2² = 40515764761 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40515764761) 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 15 ways as a sum of consecutive naturals, for example, 9486335 + ... + 9490604.

It is an arithmetic number, because the mean of its divisors is an integer number (3529710840).

Almost surely, 2^40515764765 is an apocalyptic number.

It is an amenable number.

40515764765 is a deficient number, since it is larger than the sum of its proper divisors (15959608675).

40515764765 is a wasteful number, since it uses less digits than its factorization.

40515764765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18977012.

The product of its (nonzero) digits is 3528000, while the sum is 50.

The spelling of 40515764765 in words is "forty billion, five hundred fifteen million, seven hundred sixty-four thousand, seven hundred sixty-five".