1627650257791 has 2 divisors, whose sum is σ = 1627650257792. Its totient is φ = 1627650257790.

The previous prime is 1627650257749. The next prime is 1627650257797. The reversal of 1627650257791 is 1977520567261.

It is a strong prime.

It is an emirp because it is prime and its reverse (1977520567261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1627650257791 - 2²⁵ = 1627616703359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1627650257797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 813825128895 + 813825128896.

It is an arithmetic number, because the mean of its divisors is an integer number (813825128896).

Almost surely, 2^{1627650257791} is an apocalyptic number.

1627650257791 is a deficient number, since it is larger than the sum of its proper divisors (1).

1627650257791 is an equidigital number, since it uses as much as digits as its factorization.

1627650257791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11113200, while the sum is 58.

The spelling of 1627650257791 in words is "one trillion, six hundred twenty-seven billion, six hundred fifty million, two hundred fifty-seven thousand, seven hundred ninety-one".