1560671211557 has 2 divisors, whose sum is σ = 1560671211558. Its totient is φ = 1560671211556.

The previous prime is 1560671211553. The next prime is 1560671211559. The reversal of 1560671211557 is 7551121760651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 893401149601 + 667270061956 = 945199^2 + 816866^2 .

It is a cyclic number.

It is not a de Polignac number, because 1560671211557 - 2² = 1560671211553 is a prime.

Together with 1560671211559, it forms a pair of twin primes.

It is a Chen prime.

It is a zygodrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1560671211553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 780335605778 + 780335605779.

It is an arithmetic number, because the mean of its divisors is an integer number (780335605779).

Almost surely, 2^{1560671211557} is an apocalyptic number.

It is an amenable number.

1560671211557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1560671211557 is an equidigital number, since it uses as much as digits as its factorization.

1560671211557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 441000, while the sum is 47.

The spelling of 1560671211557 in words is "one trillion, five hundred sixty billion, six hundred seventy-one million, two hundred eleven thousand, five hundred fifty-seven".