40505517913 has 16 divisors (see below), whose sum is σ = 48205474560. Its totient is φ = 33299784000.

The previous prime is 40505517911. The next prime is 40505517961. The reversal of 40505517913 is 31971550504.

40505517913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40505517913 - 2¹ = 40505517911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40505517911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 630058 + ... + 691363.

It is an arithmetic number, because the mean of its divisors is an integer number (3012842160).

Almost surely, 2^40505517913 is an apocalyptic number.

It is an amenable number.

40505517913 is a deficient number, since it is larger than the sum of its proper divisors (7699956647).

40505517913 is a wasteful number, since it uses less digits than its factorization.

40505517913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321608.

The product of its (nonzero) digits is 94500, while the sum is 40.

The spelling of 40505517913 in words is "forty billion, five hundred five million, five hundred seventeen thousand, nine hundred thirteen".