10561005660 has 48 divisors (see below), whose sum is σ = 29630160000. Its totient is φ = 2810616384.

The previous prime is 10561005641. The next prime is 10561005671. The reversal of 10561005660 is 6650016501.

10561005660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×10561005660² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 15 ways as a sum of consecutive naturals, for example, 146430 + ... + 206309.

It is an arithmetic number, because the mean of its divisors is an integer number (617295000).

Almost surely, 2^10561005660 is an apocalyptic number.

10561005660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10561005660 is an abundant number, since it is smaller than the sum of its proper divisors (19069154340).

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

10561005660 is a wasteful number, since it uses less digits than its factorization.

10561005660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353250 (or 353248 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The spelling of 10561005660 in words is "ten billion, five hundred sixty-one million, five thousand, six hundred sixty".