15560547667601 has 2 divisors, whose sum is σ = 15560547667602. Its totient is φ = 15560547667600.

The previous prime is 15560547667597. The next prime is 15560547667603. The reversal of 15560547667601 is 10676674506551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12389836806400 + 3170710861201 = 3519920^2 + 1780649^2 .

It is a cyclic number.

It is not a de Polignac number, because 15560547667601 - 2² = 15560547667597 is a prime.

Together with 15560547667603, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15560547667603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7780273833800 + 7780273833801.

It is an arithmetic number, because the mean of its divisors is an integer number (7780273833801).

Almost surely, 2^{15560547667601} is an apocalyptic number.

It is an amenable number.

15560547667601 is a deficient number, since it is larger than the sum of its proper divisors (1).

15560547667601 is an equidigital number, since it uses as much as digits as its factorization.

15560547667601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31752000, while the sum is 59.

The spelling of 15560547667601 in words is "fifteen trillion, five hundred sixty billion, five hundred forty-seven million, six hundred sixty-seven thousand, six hundred one".