561110501000 has 128 divisors (see below), whose sum is σ = 1503005587200. Its totient is φ = 192068467200.

The previous prime is 561110500961. The next prime is 561110501009. The reversal of 561110501000 is 105011165.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (561110501009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4268252 + ... + 4397748.

It is an arithmetic number, because the mean of its divisors is an integer number (11742231150).

Almost surely, 2^561110501000 is an apocalyptic number.

561110501000 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 561110501000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (751502793600).

561110501000 is an abundant number, since it is smaller than the sum of its proper divisors (941895086200).

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

561110501000 is a wasteful number, since it uses less digits than its factorization.

561110501000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130144 (or 130130 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 20.

Adding to 561110501000 its reverse (105011165), we get a palindrome (561215512165).

The spelling of 561110501000 in words is "five hundred sixty-one billion, one hundred ten million, five hundred one thousand".