12596774305 has 4 divisors (see below), whose sum is σ = 15116129172. Its totient is φ = 10077419440.

The previous prime is 12596774161. The next prime is 12596774387. The reversal of 12596774305 is 50347769521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50347769521 = 7 ⋅7192538503.

It can be written as a sum of positive squares in 2 ways, for example, as 4798471441 + 7798302864 = 69271^2 + 88308^2 .

It is not a de Polignac number, because 12596774305 - 2¹³ = 12596766113 is a prime.

It is a super-2 number, since 2×12596774305² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 1259677426 + ... + 1259677435.

It is an arithmetic number, because the mean of its divisors is an integer number (3779032293).

Almost surely, 2^12596774305 is an apocalyptic number.

It is an amenable number.

12596774305 is a deficient number, since it is larger than the sum of its proper divisors (2519354867).

12596774305 is an equidigital number, since it uses as much as digits as its factorization.

12596774305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2519354866.

The product of its (nonzero) digits is 1587600, while the sum is 49.

The spelling of 12596774305 in words is "twelve billion, five hundred ninety-six million, seven hundred seventy-four thousand, three hundred five".