1055560650491 has 2 divisors, whose sum is σ = 1055560650492. Its totient is φ = 1055560650490.

The previous prime is 1055560650481. The next prime is 1055560650511. The reversal of 1055560650491 is 1940560655501.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1055560650491 is a prime.

It is a super-2 number, since 2×1055560650491² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1055560650481) 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, 527780325245 + 527780325246.

It is an arithmetic number, because the mean of its divisors is an integer number (527780325246).

Almost surely, 2^{1055560650491} is an apocalyptic number.

1055560650491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1055560650491 is an equidigital number, since it uses as much as digits as its factorization.

1055560650491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810000, while the sum is 47.

The spelling of 1055560650491 in words is "one trillion, fifty-five billion, five hundred sixty million, six hundred fifty thousand, four hundred ninety-one".