10561055560061 has 2 divisors, whose sum is σ = 10561055560062. Its totient is φ = 10561055560060.

The previous prime is 10561055560037. The next prime is 10561055560217. The reversal of 10561055560061 is 16006555016501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10106873915161 + 454181644900 = 3179131^2 + 673930^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10561055560061 is a prime.

It is a super-2 number, since 2×10561055560061² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10561055560361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5280527780030 + 5280527780031.

It is an arithmetic number, because the mean of its divisors is an integer number (5280527780031).

Almost surely, 2^{10561055560061} is an apocalyptic number.

It is an amenable number.

10561055560061 is a deficient number, since it is larger than the sum of its proper divisors (1).

10561055560061 is an equidigital number, since it uses as much as digits as its factorization.

10561055560061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135000, while the sum is 41.

It can be divided in two parts, 1056105 and 5560061, that added together give a palindrome (6616166).

The spelling of 10561055560061 in words is "ten trillion, five hundred sixty-one billion, fifty-five million, five hundred sixty thousand, sixty-one".