13755897865 has 4 divisors (see below), whose sum is σ = 16507077444. Its totient is φ = 11004718288.

The previous prime is 13755897821. The next prime is 13755897889. The reversal of 13755897865 is 56879855731.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9279083584 + 4476814281 = 96328^2 + 66909^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13755897865 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13755897797 and 13755897806.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1375589782 + ... + 1375589791.

It is an arithmetic number, because the mean of its divisors is an integer number (4126769361).

Almost surely, 2^13755897865 is an apocalyptic number.

It is an amenable number.

13755897865 is a deficient number, since it is larger than the sum of its proper divisors (2751179579).

13755897865 is an equidigital number, since it uses as much as digits as its factorization.

13755897865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2751179578.

The product of its digits is 63504000, while the sum is 64.

The spelling of 13755897865 in words is "thirteen billion, seven hundred fifty-five million, eight hundred ninety-seven thousand, eight hundred sixty-five".