10561161056 has 48 divisors (see below), whose sum is σ = 22119940080. Its totient is φ = 4946350080.

The previous prime is 10561160993. The next prime is 10561161097. The reversal of 10561161056 is 65016116501.

It is a super-2 number, since 2×10561161056² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68780 + ... + 160788.

It is an arithmetic number, because the mean of its divisors is an integer number (460832085).

Almost surely, 2^10561161056 is an apocalyptic number.

10561161056 is a gapful number since it is divisible by the number (16) 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 10561161056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11059970040).

10561161056 is an abundant number, since it is smaller than the sum of its proper divisors (11558779024).

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

10561161056 is a wasteful number, since it uses less digits than its factorization.

10561161056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92247 (or 92239 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 32.

Adding to 10561161056 its reverse (65016116501), we get a palindrome (75577277557).

The spelling of 10561161056 in words is "ten billion, five hundred sixty-one million, one hundred sixty-one thousand, fifty-six".