561125777112 has 48 divisors (see below), whose sum is σ = 1572119640000. Its totient is φ = 180592203456.

The previous prime is 561125777071. The next prime is 561125777119. The reversal of 561125777112 is 211777521165.

561125777112 is a `hidden beast` number, since 5 + 6 + 1 + 1 + 2 + 577 + 71 + 1 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561125777119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134367112 + ... + 134371287.

It is an arithmetic number, because the mean of its divisors is an integer number (32752492500).

Almost surely, 2^561125777112 is an apocalyptic number.

It is an amenable number.

561125777112 is an abundant number, since it is smaller than the sum of its proper divisors (1010993862888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

561125777112 is a wasteful number, since it uses less digits than its factorization.

561125777112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268738440 (or 268738433 counting only the distinct ones).

The product of its digits is 205800, while the sum is 45.

The spelling of 561125777112 in words is "five hundred sixty-one billion, one hundred twenty-five million, seven hundred seventy-seven thousand, one hundred twelve".