406628965416931 has 2 divisors, whose sum is σ = 406628965416932. Its totient is φ = 406628965416930.

The previous prime is 406628965416889. The next prime is 406628965416979. The reversal of 406628965416931 is 139614569826604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 406628965416931 - 2⁷ = 406628965416803 is a prime.

It is a super-2 number, since 2×406628965416931² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (406628965416631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203314482708465 + 203314482708466.

It is an arithmetic number, because the mean of its divisors is an integer number (203314482708466).

Almost surely, 2^{406628965416931} is an apocalyptic number.

406628965416931 is a deficient number, since it is larger than the sum of its proper divisors (1).

406628965416931 is an equidigital number, since it uses as much as digits as its factorization.

406628965416931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 403107840, while the sum is 70.

The spelling of 406628965416931 in words is "four hundred six trillion, six hundred twenty-eight billion, nine hundred sixty-five million, four hundred sixteen thousand, nine hundred thirty-one".