400626264461 has 2 divisors, whose sum is σ = 400626264462. Its totient is φ = 400626264460.

The previous prime is 400626264443. The next prime is 400626264469. The reversal of 400626264461 is 164462626004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 393857911561 + 6768352900 = 627581^2 + 82270^2 .

It is a cyclic number.

It is not a de Polignac number, because 400626264461 - 2²⁶ = 400559155597 is a prime.

It is a super-2 number, since 2×400626264461² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400626264469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200313132230 + 200313132231.

It is an arithmetic number, because the mean of its divisors is an integer number (200313132231).

Almost surely, 2^400626264461 is an apocalyptic number.

It is an amenable number.

400626264461 is a deficient number, since it is larger than the sum of its proper divisors (1).

400626264461 is an equidigital number, since it uses as much as digits as its factorization.

400626264461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 41.

The spelling of 400626264461 in words is "four hundred billion, six hundred twenty-six million, two hundred sixty-four thousand, four hundred sixty-one".