426626228857 has 8 divisors (see below), whose sum is σ = 462739497192. Its totient is φ = 391737139200.

The previous prime is 426626228843. The next prime is 426626228863. The reversal of 426626228857 is 758822626624.

It can be written as a sum of positive squares in 4 ways, for example, as 38221814016 + 388404414841 = 195504^2 + 623221^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 426626228857 - 2²³ = 426617840249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426626228887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306043944 + ... + 306045337.

It is an arithmetic number, because the mean of its divisors is an integer number (57842437149).

Almost surely, 2^426626228857 is an apocalyptic number.

It is an amenable number.

426626228857 is a deficient number, since it is larger than the sum of its proper divisors (36113268335).

426626228857 is a wasteful number, since it uses less digits than its factorization.

426626228857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612089339.

The product of its digits is 30965760, while the sum is 58.

The spelling of 426626228857 in words is "four hundred twenty-six billion, six hundred twenty-six million, two hundred twenty-eight thousand, eight hundred fifty-seven".