426681697405 has 16 divisors (see below), whose sum is σ = 517180546944. Its totient is φ = 337908343360.

The previous prime is 426681697349. The next prime is 426681697447. The reversal of 426681697405 is 504796186624.

It is not a de Polignac number, because 426681697405 - 2²³ = 426673308797 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 426681697405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 444120 + ... + 1024990.

It is an arithmetic number, because the mean of its divisors is an integer number (32323784184).

Almost surely, 2^426681697405 is an apocalyptic number.

It is an amenable number.

426681697405 is a deficient number, since it is larger than the sum of its proper divisors (90498849539).

426681697405 is a wasteful number, since it uses less digits than its factorization.

426681697405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582356.

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 426681697405 in words is "four hundred twenty-six billion, six hundred eighty-one million, six hundred ninety-seven thousand, four hundred five".