561552872600 has 48 divisors (see below), whose sum is σ = 1306745291520. Its totient is φ = 224425904000.

The previous prime is 561552872599. The next prime is 561552872603. The reversal of 561552872600 is 6278255165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561552872603) 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, 989507 + ... + 1449906.

It is an arithmetic number, because the mean of its divisors is an integer number (27223860240).

Almost surely, 2^561552872600 is an apocalyptic number.

561552872600 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

561552872600 is an abundant number, since it is smaller than the sum of its proper divisors (745192418920).

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

561552872600 is a wasteful number, since it uses less digits than its factorization.

561552872600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440580 (or 2440571 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 47.

The spelling of 561552872600 in words is "five hundred sixty-one billion, five hundred fifty-two million, eight hundred seventy-two thousand, six hundred".