561428505824165 has 16 divisors (see below), whose sum is σ = 775498367763840. Its totient is φ = 382209909819840.

The previous prime is 561428505824149. The next prime is 561428505824189.

561428505824165 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 561428505824165 - 2⁴ = 561428505824149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 561428505824098 and 561428505824107.

It is a congruent number.

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, 57700766546 + ... + 57700776275.

It is an arithmetic number, because the mean of its divisors is an integer number (48468647985240).

Almost surely, 2^{561428505824165} is an apocalyptic number.

It is an amenable number.

561428505824165 is a deficient number, since it is larger than the sum of its proper divisors (214069861939675).

561428505824165 is a wasteful number, since it uses less digits than its factorization.

561428505824165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115401542972.

The product of its (nonzero) digits is 92160000, while the sum is 62.

The spelling of 561428505824165 in words is "five hundred sixty-one trillion, four hundred twenty-eight billion, five hundred five million, eight hundred twenty-four thousand, one hundred sixty-five".