561105100051 has 8 divisors (see below), whose sum is σ = 564574516560. Its totient is φ = 557636013792.

The previous prime is 561105100033. The next prime is 561105100057. The reversal of 561105100051 is 150001501165.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 561105100051 - 2⁵ = 561105100019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 561105099989 and 561105100025.

It is not an unprimeable number, because it can be changed into a prime (561105100057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3924741 + ... + 4065193.

It is an arithmetic number, because the mean of its divisors is an integer number (70571814570).

Almost surely, 2^561105100051 is an apocalyptic number.

561105100051 is a deficient number, since it is larger than the sum of its proper divisors (3469416509).

561105100051 is a wasteful number, since it uses less digits than its factorization.

561105100051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165125.

The product of its (nonzero) digits is 750, while the sum is 25.

The spelling of 561105100051 in words is "five hundred sixty-one billion, one hundred five million, one hundred thousand, fifty-one".