561101011000 has 32 divisors (see below), whose sum is σ = 1312976368080. Its totient is φ = 224440404000.

The previous prime is 561101010989. The next prime is 561101011027. The reversal of 561101011000 is 110101165.

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 7 ways as a sum of consecutive naturals, for example, 280549506 + ... + 280551505.

Almost surely, 2^561101011000 is an apocalyptic number.

561101011000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

561101011000 is an abundant number, since it is smaller than the sum of its proper divisors (751875357080).

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

561101011000 is a wasteful number, since it uses less digits than its factorization.

561101011000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561101032 (or 561101018 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 16.

Adding to 561101011000 its reverse (110101165), we get a palindrome (561211112165).

The spelling of 561101011000 in words is "five hundred sixty-one billion, one hundred one million, eleven thousand".