577978468091 has 2 divisors, whose sum is σ = 577978468092. Its totient is φ = 577978468090.

The previous prime is 577978468073. The next prime is 577978468121. The reversal of 577978468091 is 190864879775.

577978468091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-577978468091 is a prime.

It is not a weakly prime, because it can be changed into another prime (577978468061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 288989234045 + 288989234046.

It is an arithmetic number, because the mean of its divisors is an integer number (288989234046).

Almost surely, 2^577978468091 is an apocalyptic number.

577978468091 is a deficient number, since it is larger than the sum of its proper divisors (1).

577978468091 is an equidigital number, since it uses as much as digits as its factorization.

577978468091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 213373440, while the sum is 71.

The spelling of 577978468091 in words is "five hundred seventy-seven billion, nine hundred seventy-eight million, four hundred sixty-eight thousand, ninety-one".