57148395391 has 2 divisors, whose sum is σ = 57148395392. Its totient is φ = 57148395390.

The previous prime is 57148395349. The next prime is 57148395461. The reversal of 57148395391 is 19359384175.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57148395391 - 2³¹ = 55000911743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57148395331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28574197695 + 28574197696.

It is an arithmetic number, because the mean of its divisors is an integer number (28574197696).

Almost surely, 2^57148395391 is an apocalyptic number.

57148395391 is a deficient number, since it is larger than the sum of its proper divisors (1).

57148395391 is an equidigital number, since it uses as much as digits as its factorization.

57148395391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4082400, while the sum is 55.

The spelling of 57148395391 in words is "fifty-seven billion, one hundred forty-eight million, three hundred ninety-five thousand, three hundred ninety-one".