65799911999755 has 16 divisors (see below), whose sum is σ = 83922626661120. Its totient is φ = 49385237982048.

The previous prime is 65799911999749. The next prime is 65799911999803. The reversal of 65799911999755 is 55799911999756.

It is a cyclic number.

It is not a de Polignac number, because 65799911999755 - 2²⁷ = 65799777782027 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65799911999755.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3362274937 + ... + 3362294506.

It is an arithmetic number, because the mean of its divisors is an integer number (5245164166320).

Almost surely, 2^{65799911999755} is an apocalyptic number.

65799911999755 is a deficient number, since it is larger than the sum of its proper divisors (18122714661365).

65799911999755 is a wasteful number, since it uses less digits than its factorization.

65799911999755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6724569570.

The product of its digits is 19530456750, while the sum is 91.

Subtracting from 65799911999755 its reverse (55799911999756), we obtain a palindrome (9999999999999).

The spelling of 65799911999755 in words is "sixty-five trillion, seven hundred ninety-nine billion, nine hundred eleven million, nine hundred ninety-nine thousand, seven hundred fifty-five".