12536328722 has 4 divisors (see below), whose sum is σ = 18804493086. Its totient is φ = 6268164360.

The previous prime is 12536328709. The next prime is 12536328737. The reversal of 12536328722 is 22782363521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22782363521 = 65921 ⋅345601.

It can be written as a sum of positive squares in only one way, i.e., 9842822521 + 2693506201 = 99211^2 + 51899^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12536328722.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3134082179 + ... + 3134082182.

Almost surely, 2^12536328722 is an apocalyptic number.

12536328722 is a deficient number, since it is larger than the sum of its proper divisors (6268164364).

12536328722 is an equidigital number, since it uses as much as digits as its factorization.

12536328722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6268164363.

The product of its digits is 241920, while the sum is 41.

The spelling of 12536328722 in words is "twelve billion, five hundred thirty-six million, three hundred twenty-eight thousand, seven hundred twenty-two".