57326769491 has 2 divisors, whose sum is σ = 57326769492. Its totient is φ = 57326769490.

The previous prime is 57326769433. The next prime is 57326769503. The reversal of 57326769491 is 19496762375.

57326769491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57326769491 - 2²² = 57322575187 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57326769491.

It is not a weakly prime, because it can be changed into another prime (57326769191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28663384745 + 28663384746.

It is an arithmetic number, because the mean of its divisors is an integer number (28663384746).

Almost surely, 2^57326769491 is an apocalyptic number.

57326769491 is a deficient number, since it is larger than the sum of its proper divisors (1).

57326769491 is an equidigital number, since it uses as much as digits as its factorization.

57326769491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17146080, while the sum is 59.

The spelling of 57326769491 in words is "fifty-seven billion, three hundred twenty-six million, seven hundred sixty-nine thousand, four hundred ninety-one".