15056665660061 has 2 divisors, whose sum is σ = 15056665660062. Its totient is φ = 15056665660060.

The previous prime is 15056665660033. The next prime is 15056665660097. The reversal of 15056665660061 is 16006656665051.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14954416004836 + 102249655225 = 3867094^2 + 319765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15056665660061 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 15056665659985 and 15056665660012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15056665666061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7528332830030 + 7528332830031.

It is an arithmetic number, because the mean of its divisors is an integer number (7528332830031).

Almost surely, 2^{15056665660061} is an apocalyptic number.

It is an amenable number.

15056665660061 is a deficient number, since it is larger than the sum of its proper divisors (1).

15056665660061 is an equidigital number, since it uses as much as digits as its factorization.

15056665660061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832000, while the sum is 53.

The spelling of 15056665660061 in words is "fifteen trillion, fifty-six billion, six hundred sixty-five million, six hundred sixty thousand, sixty-one".