13973748657 has 16 divisors (see below), whose sum is σ = 20798139648. Its totient is φ = 8271985680.

The previous prime is 13973748653. The next prime is 13973748707. The reversal of 13973748657 is 75684737931.

It is not a de Polignac number, because 13973748657 - 2² = 13973748653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13973748657.

It is not an unprimeable number, because it can be changed into a prime (13973748653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4922383 + ... + 4925220.

It is an arithmetic number, because the mean of its divisors is an integer number (1299883728).

Almost surely, 2^13973748657 is an apocalyptic number.

It is an amenable number.

13973748657 is a deficient number, since it is larger than the sum of its proper divisors (6824390991).

13973748657 is a wasteful number, since it uses less digits than its factorization.

13973748657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9847660.

The product of its digits is 26671680, while the sum is 60.

The spelling of 13973748657 in words is "thirteen billion, nine hundred seventy-three million, seven hundred forty-eight thousand, six hundred fifty-seven".