40657431807 has 12 divisors (see below), whose sum is σ = 58730875944. Its totient is φ = 27103350960.

The previous prime is 40657431797. The next prime is 40657431809. The reversal of 40657431807 is 70813475604.

40657431807 is a `hidden beast` number, since 40 + 6 + 574 + 31 + 8 + 0 + 7 = 666.

It is not a de Polignac number, because 40657431807 - 2⁴ = 40657431791 is a prime.

It is a super-2 number, since 2×40657431807² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40657431809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38632 + ... + 287762.

It is an arithmetic number, because the mean of its divisors is an integer number (4894239662).

Almost surely, 2^40657431807 is an apocalyptic number.

40657431807 is a deficient number, since it is larger than the sum of its proper divisors (18073444137).

40657431807 is a wasteful number, since it uses less digits than its factorization.

40657431807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267270 (or 267267 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 40657431807 in words is "forty billion, six hundred fifty-seven million, four hundred thirty-one thousand, eight hundred seven".