60161056561 has 2 divisors, whose sum is σ = 60161056562. Its totient is φ = 60161056560.

The previous prime is 60161056547. The next prime is 60161056573. The reversal of 60161056561 is 16565016106.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53312501025 + 6848555536 = 230895^2 + 82756^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-60161056561 is a prime.

It is a super-2 number, since 2×60161056561² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 60161056561.

It is not a weakly prime, because it can be changed into another prime (60161056511) by changing a digit.

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 as a sum of consecutive naturals, namely, 30080528280 + 30080528281.

It is an arithmetic number, because the mean of its divisors is an integer number (30080528281).

Almost surely, 2^60161056561 is an apocalyptic number.

It is an amenable number.

60161056561 is a deficient number, since it is larger than the sum of its proper divisors (1).

60161056561 is an equidigital number, since it uses as much as digits as its factorization.

60161056561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 60161056561 in words is "sixty billion, one hundred sixty-one million, fifty-six thousand, five hundred sixty-one".