13247468642 has 4 divisors (see below), whose sum is σ = 19871202966. Its totient is φ = 6623734320.

The previous prime is 13247468639. The next prime is 13247468651. The reversal of 13247468642 is 24686474231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24686474231 = 17 ⋅1452145543.

It can be written as a sum of positive squares in only one way, i.e., 11231548441 + 2015920201 = 105979^2 + 44899^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3311867159 + ... + 3311867162.

Almost surely, 2^13247468642 is an apocalyptic number.

13247468642 is a deficient number, since it is larger than the sum of its proper divisors (6623734324).

13247468642 is an equidigital number, since it uses as much as digits as its factorization.

13247468642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6623734323.

The product of its digits is 1548288, while the sum is 47.

The spelling of 13247468642 in words is "thirteen billion, two hundred forty-seven million, four hundred sixty-eight thousand, six hundred forty-two".