50565511556565 has 64 divisors (see below), whose sum is σ = 81559920798720. Its totient is φ = 26750762680320.

The previous prime is 50565511556537. The next prime is 50565511556621. The reversal of 50565511556565 is 56565511556505.

It is a happy number.

It is not a de Polignac number, because 50565511556565 - 2⁵ = 50565511556533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 50565511556499 and 50565511556508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4809802749 + ... + 4809813261.

It is an arithmetic number, because the mean of its divisors is an integer number (1274373762480).

Almost surely, 2^{50565511556565} is an apocalyptic number.

It is an amenable number.

50565511556565 is a deficient number, since it is larger than the sum of its proper divisors (30994409242155).

50565511556565 is a wasteful number, since it uses less digits than its factorization.

50565511556565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15374.

The product of its (nonzero) digits is 84375000, while the sum is 60.

Subtracting from 50565511556565 its sum of digits (60), we obtain a palindrome (50565511556505).

The spelling of 50565511556565 in words is "fifty trillion, five hundred sixty-five billion, five hundred eleven million, five hundred fifty-six thousand, five hundred sixty-five".