40656534405 has 16 divisors (see below), whose sum is σ = 65682015360. Its totient is φ = 21472964928.

The previous prime is 40656534319. The next prime is 40656534463. The reversal of 40656534405 is 50443565604.

It is not a de Polignac number, because 40656534405 - 2⁹ = 40656533893 is a prime.

It is a congruent number.

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, 13155910 + ... + 13158999.

It is an arithmetic number, because the mean of its divisors is an integer number (4105125960).

Almost surely, 2^40656534405 is an apocalyptic number.

It is an amenable number.

40656534405 is a deficient number, since it is larger than the sum of its proper divisors (25025480955).

40656534405 is a wasteful number, since it uses less digits than its factorization.

40656534405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26315020.

The product of its (nonzero) digits is 864000, while the sum is 42.

The spelling of 40656534405 in words is "forty billion, six hundred fifty-six million, five hundred thirty-four thousand, four hundred five".