426513615631505 has 4 divisors (see below), whose sum is σ = 511816338757812. Its totient is φ = 341210892505200.

The previous prime is 426513615631487. The next prime is 426513615631567. The reversal of 426513615631505 is 505136516315624.

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

It can be written as a sum of positive squares in 2 ways, for example, as 317120340784129 + 109393274847376 = 17807873^2 + 10459124^2 .

It is not a de Polignac number, because 426513615631505 - 2⁸ = 426513615631249 is a prime.

It is a super-3 number, since 3×426513615631505³ (a number of 45 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42651361563146 + ... + 42651361563155.

It is an arithmetic number, because the mean of its divisors is an integer number (127954084689453).

Almost surely, 2^{426513615631505} is an apocalyptic number.

It is an amenable number.

426513615631505 is a deficient number, since it is larger than the sum of its proper divisors (85302723126307).

426513615631505 is an equidigital number, since it uses as much as digits as its factorization.

426513615631505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85302723126306.

The product of its (nonzero) digits is 9720000, while the sum is 53.

The spelling of 426513615631505 in words is "four hundred twenty-six trillion, five hundred thirteen billion, six hundred fifteen million, six hundred thirty-one thousand, five hundred five".