13964656557 has 8 divisors (see below), whose sum is σ = 18700851040. Its totient is φ = 9269116560.

The previous prime is 13964656543. The next prime is 13964656561. The reversal of 13964656557 is 75565646931.

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

It is not a de Polignac number, because 13964656557 - 2¹⁵ = 13964623789 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13964656497 and 13964656506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13964656357) 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, 10162819 + ... + 10164192.

It is an arithmetic number, because the mean of its divisors is an integer number (2337606380).

Almost surely, 2^13964656557 is an apocalyptic number.

It is an amenable number.

13964656557 is a deficient number, since it is larger than the sum of its proper divisors (4736194483).

13964656557 is a wasteful number, since it uses less digits than its factorization.

13964656557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20327243.

The product of its digits is 20412000, while the sum is 57.

The spelling of 13964656557 in words is "thirteen billion, nine hundred sixty-four million, six hundred fifty-six thousand, five hundred fifty-seven".