1577064336691 has 2 divisors, whose sum is σ = 1577064336692. Its totient is φ = 1577064336690.

The previous prime is 1577064336611. The next prime is 1577064336707. The reversal of 1577064336691 is 1966334607751.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1577064336691 - 2¹⁹ = 1577063812403 is a prime.

It is not a weakly prime, because it can be changed into another prime (1577064336611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 788532168345 + 788532168346.

It is an arithmetic number, because the mean of its divisors is an integer number (788532168346).

Almost surely, 2^{1577064336691} is an apocalyptic number.

1577064336691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1577064336691 is an equidigital number, since it uses as much as digits as its factorization.

1577064336691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17146080, while the sum is 58.

The spelling of 1577064336691 in words is "one trillion, five hundred seventy-seven billion, sixty-four million, three hundred thirty-six thousand, six hundred ninety-one".