13621834874 has 8 divisors (see below), whose sum is σ = 20433553140. Its totient is φ = 6810650496.

The previous prime is 13621834873. The next prime is 13621834903. The reversal of 13621834874 is 47843812631.

It can be written as a sum of positive squares in 2 ways, for example, as 13620523849 + 1311025 = 116707^2 + 1145^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (13621834873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62039 + ... + 176330.

Almost surely, 2^13621834874 is an apocalyptic number.

13621834874 is a deficient number, since it is larger than the sum of its proper divisors (6811718266).

13621834874 is a wasteful number, since it uses less digits than its factorization.

13621834874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266944.

The product of its digits is 774144, while the sum is 47.

The spelling of 13621834874 in words is "thirteen billion, six hundred twenty-one million, eight hundred thirty-four thousand, eight hundred seventy-four".