13621426617 has 8 divisors (see below), whose sum is σ = 18163376224. Its totient is φ = 9080214048.

The previous prime is 13621426601. The next prime is 13621426633. The reversal of 13621426617 is 71662412631.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13621426601) and next prime (13621426633).

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

It is not a de Polignac number, because 13621426617 - 2⁴ = 13621426601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13621426517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139588 + ... + 216165.

It is an arithmetic number, because the mean of its divisors is an integer number (2270422028).

Almost surely, 2^13621426617 is an apocalyptic number.

It is an amenable number.

13621426617 is a deficient number, since it is larger than the sum of its proper divisors (4541949607).

13621426617 is a wasteful number, since it uses less digits than its factorization.

13621426617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368519.

The product of its digits is 72576, while the sum is 39.

The spelling of 13621426617 in words is "thirteen billion, six hundred twenty-one million, four hundred twenty-six thousand, six hundred seventeen".