13668717186 has 48 divisors (see below), whose sum is σ = 30364883640. Its totient is φ = 4441155840.

The previous prime is 13668717169. The next prime is 13668717203. The reversal of 13668717186 is 68171786631.

It is an interprime number because it is at equal distance from previous prime (13668717169) and next prime (13668717203).

It can be written as a sum of positive squares in 4 ways, for example, as 4119714225 + 9549002961 = 64185^2 + 97719^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 887560 + ... + 902828.

Almost surely, 2^13668717186 is an apocalyptic number.

13668717186 is an abundant number, since it is smaller than the sum of its proper divisors (16696166454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13668717186 is a wasteful number, since it uses less digits than its factorization.

13668717186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16531 (or 16528 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The spelling of 13668717186 in words is "thirteen billion, six hundred sixty-eight million, seven hundred seventeen thousand, one hundred eighty-six".