400007615057 has 2 divisors, whose sum is σ = 400007615058. Its totient is φ = 400007615056.

The previous prime is 400007615027. The next prime is 400007615101. The reversal of 400007615057 is 750516700004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 234729591121 + 165278023936 = 484489^2 + 406544^2 .

It is a cyclic number.

It is not a de Polignac number, because 400007615057 - 2²⁸ = 399739179601 is a prime.

It is a super-2 number, since 2×400007615057² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (400007615027) 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 as a sum of consecutive naturals, namely, 200003807528 + 200003807529.

It is an arithmetic number, because the mean of its divisors is an integer number (200003807529).

Almost surely, 2^400007615057 is an apocalyptic number.

It is an amenable number.

400007615057 is a deficient number, since it is larger than the sum of its proper divisors (1).

400007615057 is an equidigital number, since it uses as much as digits as its factorization.

400007615057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29400, while the sum is 35.

The spelling of 400007615057 in words is "four hundred billion, seven million, six hundred fifteen thousand, fifty-seven".