426728312613 has 36 divisors (see below), whose sum is σ = 640254948268. Its totient is φ = 284398879680.

The previous prime is 426728312611. The next prime is 426728312623. The reversal of 426728312613 is 316213827624.

426728312613 is a `hidden beast` number, since 4 + 2 + 6 + 7 + 28 + 3 + 1 + 2 + 613 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 216319870404 + 210408442209 = 465102^2 + 458703^2 .

It is not a de Polignac number, because 426728312613 - 2¹ = 426728312611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426728312611) 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 35 ways as a sum of consecutive naturals, for example, 27240003 + ... + 27255663.

Almost surely, 2^426728312613 is an apocalyptic number.

It is an amenable number.

426728312613 is a deficient number, since it is larger than the sum of its proper divisors (213526635655).

426728312613 is an frugal number, since it uses more digits than its factorization.

426728312613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19838 (or 19817 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The spelling of 426728312613 in words is "four hundred twenty-six billion, seven hundred twenty-eight million, three hundred twelve thousand, six hundred thirteen".