426194631257 has 16 divisors (see below), whose sum is σ = 445572264960. Its totient is φ = 406888336272.

The previous prime is 426194631253. The next prime is 426194631281. The reversal of 426194631257 is 752136491624.

It is a cyclic number.

It is not a de Polignac number, because 426194631257 - 2² = 426194631253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426194631253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30639098 + ... + 30653004.

It is an arithmetic number, because the mean of its divisors is an integer number (27848266560).

Almost surely, 2^426194631257 is an apocalyptic number.

It is an amenable number.

426194631257 is a deficient number, since it is larger than the sum of its proper divisors (19377633703).

426194631257 is a wasteful number, since it uses less digits than its factorization.

426194631257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16372.

The product of its digits is 2177280, while the sum is 50.

The spelling of 426194631257 in words is "four hundred twenty-six billion, one hundred ninety-four million, six hundred thirty-one thousand, two hundred fifty-seven".