13147985669 has 8 divisors (see below), whose sum is σ = 16182136320. Its totient is φ = 10402801776.

The previous prime is 13147985633. The next prime is 13147985713. The reversal of 13147985669 is 96658974131.

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 13147985669 - 2¹² = 13147981573 is a prime.

It is a super-2 number, since 2×13147985669² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13147985069) 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, 72241589 + ... + 72241770.

It is an arithmetic number, because the mean of its divisors is an integer number (2022767040).

Almost surely, 2^13147985669 is an apocalyptic number.

It is an amenable number.

13147985669 is a deficient number, since it is larger than the sum of its proper divisors (3034150651).

13147985669 is a wasteful number, since it uses less digits than its factorization.

13147985669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144483379.

The product of its digits is 9797760, while the sum is 59.

The spelling of 13147985669 in words is "thirteen billion, one hundred forty-seven million, nine hundred eighty-five thousand, six hundred sixty-nine".