13687334947 has 16 divisors (see below), whose sum is σ = 16300515168. Its totient is φ = 11328526080.

The previous prime is 13687334897. The next prime is 13687334951. The reversal of 13687334947 is 74943378631.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13687334947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13687334447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 645148 + ... + 666025.

It is an arithmetic number, because the mean of its divisors is an integer number (1018782198).

Almost surely, 2^13687334947 is an apocalyptic number.

13687334947 is a deficient number, since it is larger than the sum of its proper divisors (2613180221).

13687334947 is a wasteful number, since it uses less digits than its factorization.

13687334947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311270.

The product of its digits is 9144576, while the sum is 55.

The spelling of 13687334947 in words is "thirteen billion, six hundred eighty-seven million, three hundred thirty-four thousand, nine hundred forty-seven".