561566051007 has 16 divisors (see below), whose sum is σ = 806374543968. Its totient is φ = 345569126400.

The previous prime is 561566050973. The next prime is 561566051009. The reversal of 561566051007 is 700150665165.

It is not a de Polignac number, because 561566051007 - 2⁶ = 561566050943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 561566051007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561566051009) 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, 1297507 + ... + 1675307.

It is an arithmetic number, because the mean of its divisors is an integer number (50398408998).

Almost surely, 2^561566051007 is an apocalyptic number.

561566051007 is a deficient number, since it is larger than the sum of its proper divisors (244808492961).

561566051007 is a wasteful number, since it uses less digits than its factorization.

561566051007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415930.

The product of its (nonzero) digits is 189000, while the sum is 42.

The spelling of 561566051007 in words is "five hundred sixty-one billion, five hundred sixty-six million, fifty-one thousand, seven".