561976510914 has 144 divisors (see below), whose sum is σ = 1529219430648. Its totient is φ = 147839053824.

The previous prime is 561976510841. The next prime is 561976510939. The reversal of 561976510914 is 419015679165.

561976510914 is a `hidden beast` number, since 5 + 619 + 7 + 6 + 5 + 1 + 0 + 9 + 14 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 548747600625 + 13228910289 = 740775^2 + 115017^2 .

It is a super-2 number, since 2×561976510914² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4490274 + ... + 4613730.

Almost surely, 2^561976510914 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561976510914, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (764609715324).

561976510914 is an abundant number, since it is smaller than the sum of its proper divisors (967242919734).

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

561976510914 is a wasteful number, since it uses less digits than its factorization.

561976510914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123889 (or 123879 counting only the distinct ones).

The product of its (nonzero) digits is 2041200, while the sum is 54.

The spelling of 561976510914 in words is "five hundred sixty-one billion, nine hundred seventy-six million, five hundred ten thousand, nine hundred fourteen".