13217721676 has 24 divisors (see below), whose sum is σ = 23552868416. Its totient is φ = 6488974800.

The previous prime is 13217721653. The next prime is 13217721701. The reversal of 13217721676 is 67612771231.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1951 + ... + 162601.

Almost surely, 2^13217721676 is an apocalyptic number.

It is an amenable number.

13217721676 is a deficient number, since it is larger than the sum of its proper divisors (10335146740).

13217721676 is a wasteful number, since it uses less digits than its factorization.

13217721676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161029 (or 161027 counting only the distinct ones).

The product of its digits is 148176, while the sum is 43.

The spelling of 13217721676 in words is "thirteen billion, two hundred seventeen million, seven hundred twenty-one thousand, six hundred seventy-six".