561371246700 has 144 divisors (see below), whose sum is σ = 1772480970624. Its totient is φ = 136044748800.

The previous prime is 561371246677. The next prime is 561371246701. The reversal of 561371246700 is 7642173165.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (561371246701) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 10490412 + ... + 10543788.

Almost surely, 2^561371246700 is an apocalyptic number.

561371246700 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561371246700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (886240485312).

561371246700 is an abundant number, since it is smaller than the sum of its proper divisors (1211109723924).

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

561371246700 is a wasteful number, since it uses less digits than its factorization.

561371246700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56592 (or 56585 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 42.

The spelling of 561371246700 in words is "five hundred sixty-one billion, three hundred seventy-one million, two hundred forty-six thousand, seven hundred".