13662809517 has 32 divisors (see below), whose sum is σ = 20896876800. Its totient is φ = 7778377728.

The previous prime is 13662809497. The next prime is 13662809549. The reversal of 13662809517 is 71590826631.

It is not a de Polignac number, because 13662809517 - 2⁸ = 13662809261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13662809597) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9696109 + ... + 9697517.

It is an arithmetic number, because the mean of its divisors is an integer number (653027400).

Almost surely, 2^13662809517 is an apocalyptic number.

It is an amenable number.

13662809517 is a deficient number, since it is larger than the sum of its proper divisors (7234067283).

13662809517 is a wasteful number, since it uses less digits than its factorization.

13662809517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2805.

The product of its (nonzero) digits is 544320, while the sum is 48.

The spelling of 13662809517 in words is "thirteen billion, six hundred sixty-two million, eight hundred nine thousand, five hundred seventeen".