13660405670 has 16 divisors (see below), whose sum is σ = 24591621168. Its totient is φ = 5463519840.

The previous prime is 13660405667. The next prime is 13660405691. The reversal of 13660405670 is 7650406631.

It is a happy number.

It is a congruent 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, 14312 + ... + 165908.

It is an arithmetic number, because the mean of its divisors is an integer number (1536976323).

Almost surely, 2^13660405670 is an apocalyptic number.

13660405670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13660405670 is a deficient number, since it is larger than the sum of its proper divisors (10931215498).

13660405670 is a wasteful number, since it uses less digits than its factorization.

13660405670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160615.

The product of its (nonzero) digits is 90720, while the sum is 38.

The spelling of 13660405670 in words is "thirteen billion, six hundred sixty million, four hundred five thousand, six hundred seventy".