561056051055 has 16 divisors (see below), whose sum is σ = 944936507520. Its totient is φ = 283480951968.

The previous prime is 561056051051. The next prime is 561056051071. The reversal of 561056051055 is 550150650165.

It is not a de Polignac number, because 561056051055 - 2² = 561056051051 is a prime.

It is a super-2 number, since 2×561056051055² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561056051051) 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, 984308577 + ... + 984309146.

It is an arithmetic number, because the mean of its divisors is an integer number (59058531720).

Almost surely, 2^561056051055 is an apocalyptic number.

561056051055 is a deficient number, since it is larger than the sum of its proper divisors (383880456465).

561056051055 is a wasteful number, since it uses less digits than its factorization.

561056051055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968617750.

The product of its (nonzero) digits is 112500, while the sum is 39.

The spelling of 561056051055 in words is "five hundred sixty-one billion, fifty-six million, fifty-one thousand, fifty-five".