1560507621481 has 2 divisors, whose sum is σ = 1560507621482. Its totient is φ = 1560507621480.

The previous prime is 1560507621469. The next prime is 1560507621487. The reversal of 1560507621481 is 1841267050651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1461209528025 + 99298093456 = 1208805^2 + 315116^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1560507621481 is a prime.

It is a super-2 number, since 2×1560507621481² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1560507621487) 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, 780253810740 + 780253810741.

It is an arithmetic number, because the mean of its divisors is an integer number (780253810741).

Almost surely, 2^{1560507621481} is an apocalyptic number.

It is an amenable number.

1560507621481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1560507621481 is an equidigital number, since it uses as much as digits as its factorization.

1560507621481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 403200, while the sum is 46.

The spelling of 1560507621481 in words is "one trillion, five hundred sixty billion, five hundred seven million, six hundred twenty-one thousand, four hundred eighty-one".