561466526556 has 48 divisors (see below), whose sum is σ = 1448996095904. Its totient is φ = 168089769216.

The previous prime is 561466526539. The next prime is 561466526591. The reversal of 561466526556 is 655625664165.

It is a happy number.

It is a super-2 number, since 2×561466526556² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 561466526496 and 561466526505.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 48631315 + ... + 48642858.

Almost surely, 2^561466526556 is an apocalyptic number.

It is an amenable number.

561466526556 is an abundant number, since it is smaller than the sum of its proper divisors (887529569348).

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

561466526556 is a wasteful number, since it uses less digits than its factorization.

561466526556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97274230 (or 97274228 counting only the distinct ones).

The product of its digits is 38880000, while the sum is 57.

The spelling of 561466526556 in words is "five hundred sixty-one billion, four hundred sixty-six million, five hundred twenty-six thousand, five hundred fifty-six".