13621707794 has 8 divisors (see below), whose sum is σ = 20634864588. Its totient is φ = 6743419600.

The previous prime is 13621707773. The next prime is 13621707809. The reversal of 13621707794 is 49770712631.

It can be written as a sum of positive squares in 2 ways, for example, as 11678044225 + 1943663569 = 108065^2 + 44087^2 .

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

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, 33716897 + ... + 33717300.

Almost surely, 2^13621707794 is an apocalyptic number.

13621707794 is a deficient number, since it is larger than the sum of its proper divisors (7013156794).

13621707794 is a wasteful number, since it uses less digits than its factorization.

13621707794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67434300.

The product of its (nonzero) digits is 444528, while the sum is 47.

The spelling of 13621707794 in words is "thirteen billion, six hundred twenty-one million, seven hundred seven thousand, seven hundred ninety-four".