426813324551 has 2 divisors, whose sum is σ = 426813324552. Its totient is φ = 426813324550.

The previous prime is 426813324517. The next prime is 426813324557. The reversal of 426813324551 is 155423318624.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 426813324551 - 2³⁸ = 151935417607 is a prime.

It is a super-2 number, since 2×426813324551² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426813324557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213406662275 + 213406662276.

It is an arithmetic number, because the mean of its divisors is an integer number (213406662276).

Almost surely, 2^426813324551 is an apocalyptic number.

426813324551 is a deficient number, since it is larger than the sum of its proper divisors (1).

426813324551 is an equidigital number, since it uses as much as digits as its factorization.

426813324551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 691200, while the sum is 44.

The spelling of 426813324551 in words is "four hundred twenty-six billion, eight hundred thirteen million, three hundred twenty-four thousand, five hundred fifty-one".