13117522661 has 8 divisors (see below), whose sum is σ = 13212786048. Its totient is φ = 13022370000.

The previous prime is 13117522589. The next prime is 13117522697. The reversal of 13117522661 is 16622571131.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13117522661 - 2¹⁸ = 13117260517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13117542661) 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, 217976 + ... + 271566.

It is an arithmetic number, because the mean of its divisors is an integer number (1651598256).

Almost surely, 2^13117522661 is an apocalyptic number.

It is an amenable number.

13117522661 is a deficient number, since it is larger than the sum of its proper divisors (95263387).

13117522661 is a wasteful number, since it uses less digits than its factorization.

13117522661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55363.

The product of its digits is 15120, while the sum is 35.

The spelling of 13117522661 in words is "thirteen billion, one hundred seventeen million, five hundred twenty-two thousand, six hundred sixty-one".