400713971691 has 48 divisors (see below), whose sum is σ = 605921345280. Its totient is φ = 233441444160.

The previous prime is 400713971663. The next prime is 400713971699. The reversal of 400713971691 is 196179317004.

It is not a de Polignac number, because 400713971691 - 2⁷ = 400713971563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 400713971691.

It is not an unprimeable number, because it can be changed into a prime (400713971699) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8387650 + ... + 8435288.

It is an arithmetic number, because the mean of its divisors is an integer number (12623361360).

Almost surely, 2^400713971691 is an apocalyptic number.

400713971691 is a deficient number, since it is larger than the sum of its proper divisors (205207373589).

400713971691 is a wasteful number, since it uses less digits than its factorization.

400713971691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47856 (or 47773 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 48.

The spelling of 400713971691 in words is "four hundred billion, seven hundred thirteen million, nine hundred seventy-one thousand, six hundred ninety-one".