561055500051 has 16 divisors (see below), whose sum is σ = 755519581440. Its totient is φ = 370314591200.

The previous prime is 561055500037. The next prime is 561055500113. The reversal of 561055500051 is 150005550165.

It is a cyclic number.

It is not a de Polignac number, because 561055500051 - 2³⁴ = 543875630867 is a prime.

It is a super-2 number, since 2×561055500051² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 561055499985 and 561055500021.

It is not an unprimeable number, because it can be changed into a prime (561055580051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8190220 + ... + 8258438.

It is an arithmetic number, because the mean of its divisors is an integer number (47219973840).

Almost surely, 2^561055500051 is an apocalyptic number.

561055500051 is a deficient number, since it is larger than the sum of its proper divisors (194464081389).

561055500051 is a wasteful number, since it uses less digits than its factorization.

561055500051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95466.

The product of its (nonzero) digits is 18750, while the sum is 33.

The spelling of 561055500051 in words is "five hundred sixty-one billion, fifty-five million, five hundred thousand, fifty-one".