13686977140 has 48 divisors (see below), whose sum is σ = 29216935440. Its totient is φ = 5385093120.

The previous prime is 13686977081. The next prime is 13686977159. The reversal of 13686977140 is 4177968631.

It can be written as a sum of positive squares in 8 ways, for example, as 2932872336 + 10754104804 = 54156^2 + 103702^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323620 + ... + 363460.

It is an arithmetic number, because the mean of its divisors is an integer number (608686155).

Almost surely, 2^13686977140 is an apocalyptic number.

13686977140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13686977140 is an abundant number, since it is smaller than the sum of its proper divisors (15529958300).

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

13686977140 is a wasteful number, since it uses less digits than its factorization.

13686977140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40132 (or 40130 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 52.

The spelling of 13686977140 in words is "thirteen billion, six hundred eighty-six million, nine hundred seventy-seven thousand, one hundred forty".