426431256722 has 4 divisors (see below), whose sum is σ = 639646885086. Its totient is φ = 213215628360.

The previous prime is 426431256703. The next prime is 426431256733. The reversal of 426431256722 is 227652134624.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 268926253561 + 157505003161 = 518581^2 + 396869^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106607814179 + ... + 106607814182.

Almost surely, 2^426431256722 is an apocalyptic number.

426431256722 is a deficient number, since it is larger than the sum of its proper divisors (213215628364).

426431256722 is a wasteful number, since it uses less digits than its factorization.

426431256722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213215628363.

The product of its digits is 967680, while the sum is 44.

The spelling of 426431256722 in words is "four hundred twenty-six billion, four hundred thirty-one million, two hundred fifty-six thousand, seven hundred twenty-two".