577984796681 has 2 divisors, whose sum is σ = 577984796682. Its totient is φ = 577984796680.

The previous prime is 577984796639. The next prime is 577984796689. The reversal of 577984796681 is 186697489775.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 548517984400 + 29466812281 = 740620^2 + 171659^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-577984796681 is a prime.

It is a super-2 number, since 2×577984796681² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (577984796689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 288992398340 + 288992398341.

It is an arithmetic number, because the mean of its divisors is an integer number (288992398341).

Almost surely, 2^577984796681 is an apocalyptic number.

It is an amenable number.

577984796681 is a deficient number, since it is larger than the sum of its proper divisors (1).

577984796681 is an equidigital number, since it uses as much as digits as its factorization.

577984796681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1280240640, while the sum is 77.

The spelling of 577984796681 in words is "five hundred seventy-seven billion, nine hundred eighty-four million, seven hundred ninety-six thousand, six hundred eighty-one".