10561161055 has 8 divisors (see below), whose sum is σ = 12683217744. Its totient is φ = 8442379200.

The previous prime is 10561160993. The next prime is 10561161097. The reversal of 10561161055 is 55016116501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10561161055 - 2¹⁵ = 10561128287 is a prime.

It is a super-2 number, since 2×10561161055² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

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, 811606 + ... + 824515.

It is an arithmetic number, because the mean of its divisors is an integer number (1585402218).

Almost surely, 2^10561161055 is an apocalyptic number.

10561161055 is a deficient number, since it is larger than the sum of its proper divisors (2122056689).

10561161055 is a wasteful number, since it uses less digits than its factorization.

10561161055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1637417.

The product of its (nonzero) digits is 4500, while the sum is 31.

Adding to 10561161055 its reverse (55016116501), we get a palindrome (65577277556).

The spelling of 10561161055 in words is "ten billion, five hundred sixty-one million, one hundred sixty-one thousand, fifty-five".