13686785957 has 8 divisors (see below), whose sum is σ = 14989440480. Its totient is φ = 12419820720.

The previous prime is 13686785953. The next prime is 13686785989. The reversal of 13686785957 is 75958768631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13686785957 - 2² = 13686785953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13686785893 and 13686785902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13686785953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8921519 + ... + 8923052.

It is an arithmetic number, because the mean of its divisors is an integer number (1873680060).

Almost surely, 2^13686785957 is an apocalyptic number.

It is an amenable number.

13686785957 is a deficient number, since it is larger than the sum of its proper divisors (1302654523).

13686785957 is a wasteful number, since it uses less digits than its factorization.

13686785957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17844643.

The product of its digits is 76204800, while the sum is 65.

The spelling of 13686785957 in words is "thirteen billion, six hundred eighty-six million, seven hundred eighty-five thousand, nine hundred fifty-seven".