561260354556 has 48 divisors (see below), whose sum is σ = 1428758327808. Its totient is φ = 170067513600.

The previous prime is 561260354531. The next prime is 561260354561. The reversal of 561260354556 is 655453062165.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1954276 + ... + 2222996.

It is an arithmetic number, because the mean of its divisors is an integer number (29765798496).

Almost surely, 2^561260354556 is an apocalyptic number.

It is an amenable number.

561260354556 is an abundant number, since it is smaller than the sum of its proper divisors (867497973252).

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

561260354556 is a wasteful number, since it uses less digits than its factorization.

561260354556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284562 (or 284560 counting only the distinct ones).

The product of its (nonzero) digits is 3240000, while the sum is 48.

The spelling of 561260354556 in words is "five hundred sixty-one billion, two hundred sixty million, three hundred fifty-four thousand, five hundred fifty-six".