13993655857 has 8 divisors (see below), whose sum is σ = 14757402560. Its totient is φ = 13232633040.

The previous prime is 13993655833. The next prime is 13993655861. The reversal of 13993655857 is 75855639931.

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 13993655857 - 2¹¹ = 13993653809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13993655795 and 13993655804.

It is not an unprimeable number, because it can be changed into a prime (13993655057) 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, 670413 + ... + 690970.

It is an arithmetic number, because the mean of its divisors is an integer number (1844675320).

Almost surely, 2^13993655857 is an apocalyptic number.

It is an amenable number.

13993655857 is a deficient number, since it is larger than the sum of its proper divisors (763746703).

13993655857 is a wasteful number, since it uses less digits than its factorization.

13993655857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361943.

The product of its digits is 30618000, while the sum is 61.

The spelling of 13993655857 in words is "thirteen billion, nine hundred ninety-three million, six hundred fifty-five thousand, eight hundred fifty-seven".