426774236491 has 2 divisors, whose sum is σ = 426774236492. Its totient is φ = 426774236490.

The previous prime is 426774236489. The next prime is 426774236527. The reversal of 426774236491 is 194632477624.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 426774236491 - 2¹ = 426774236489 is a prime.

Together with 426774236489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (426774236401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213387118245 + 213387118246.

It is an arithmetic number, because the mean of its divisors is an integer number (213387118246).

Almost surely, 2^426774236491 is an apocalyptic number.

426774236491 is a deficient number, since it is larger than the sum of its proper divisors (1).

426774236491 is an equidigital number, since it uses as much as digits as its factorization.

426774236491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12192768, while the sum is 55.

The spelling of 426774236491 in words is "four hundred twenty-six billion, seven hundred seventy-four million, two hundred thirty-six thousand, four hundred ninety-one".