561326636022513 has 4 divisors (see below), whose sum is σ = 748435514696688. Its totient is φ = 374217757348340.

The previous prime is 561326636022497. The next prime is 561326636022521. The reversal of 561326636022513 is 315220636623165.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 561326636022513 - 2⁴ = 561326636022497 is a prime.

It is a super-2 number, since 2×561326636022513² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (561326636022533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93554439337083 + ... + 93554439337088.

It is an arithmetic number, because the mean of its divisors is an integer number (187108878674172).

Almost surely, 2^{561326636022513} is an apocalyptic number.

It is an amenable number.

561326636022513 is a deficient number, since it is larger than the sum of its proper divisors (187108878674175).

561326636022513 is a wasteful number, since it uses less digits than its factorization.

561326636022513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187108878674174.

The product of its (nonzero) digits is 6998400, while the sum is 51.

The spelling of 561326636022513 in words is "five hundred sixty-one trillion, three hundred twenty-six billion, six hundred thirty-six million, twenty-two thousand, five hundred thirteen".