1577147426797 has 2 divisors, whose sum is σ = 1577147426798. Its totient is φ = 1577147426796.

The previous prime is 1577147426759. The next prime is 1577147426849. The reversal of 1577147426797 is 7976247417751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1477729553161 + 99417873636 = 1215619^2 + 315306^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1577147426797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1577147426707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 788573713398 + 788573713399.

It is an arithmetic number, because the mean of its divisors is an integer number (788573713399).

Almost surely, 2^{1577147426797} is an apocalyptic number.

It is an amenable number.

1577147426797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1577147426797 is an equidigital number, since it uses as much as digits as its factorization.

1577147426797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145212480, while the sum is 67.

The spelling of 1577147426797 in words is "one trillion, five hundred seventy-seven billion, one hundred forty-seven million, four hundred twenty-six thousand, seven hundred ninety-seven".