13857958745 has 4 divisors (see below), whose sum is σ = 16629550500. Its totient is φ = 11086366992.

The previous prime is 13857958733. The next prime is 13857958757. The reversal of 13857958745 is 54785975831.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (13857958733) and next prime (13857958757).

It can be written as a sum of positive squares in 2 ways, for example, as 1521858121 + 12336100624 = 39011^2 + 111068^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13857958745 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1385795870 + ... + 1385795879.

It is an arithmetic number, because the mean of its divisors is an integer number (4157387625).

Almost surely, 2^13857958745 is an apocalyptic number.

It is an amenable number.

13857958745 is a deficient number, since it is larger than the sum of its proper divisors (2771591755).

13857958745 is an equidigital number, since it uses as much as digits as its factorization.

13857958745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2771591754.

The product of its digits is 42336000, while the sum is 62.

The spelling of 13857958745 in words is "thirteen billion, eight hundred fifty-seven million, nine hundred fifty-eight thousand, seven hundred forty-five".