421056264511 has 2 divisors, whose sum is σ = 421056264512. Its totient is φ = 421056264510.

The previous prime is 421056264491. The next prime is 421056264547. The reversal of 421056264511 is 115462650124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421056264511 - 2⁵ = 421056264479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421056264011) 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, 210528132255 + 210528132256.

It is an arithmetic number, because the mean of its divisors is an integer number (210528132256).

Almost surely, 2^421056264511 is an apocalyptic number.

421056264511 is a deficient number, since it is larger than the sum of its proper divisors (1).

421056264511 is an equidigital number, since it uses as much as digits as its factorization.

421056264511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 421056264511 in words is "four hundred twenty-one billion, fifty-six million, two hundred sixty-four thousand, five hundred eleven".