57648015391 has 2 divisors, whose sum is σ = 57648015392. Its totient is φ = 57648015390.

The previous prime is 57648015361. The next prime is 57648015401. The reversal of 57648015391 is 19351084675.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57648015391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57648015361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28824007695 + 28824007696.

It is an arithmetic number, because the mean of its divisors is an integer number (28824007696).

Almost surely, 2^57648015391 is an apocalyptic number.

57648015391 is a deficient number, since it is larger than the sum of its proper divisors (1).

57648015391 is an equidigital number, since it uses as much as digits as its factorization.

57648015391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 907200, while the sum is 49.

The spelling of 57648015391 in words is "fifty-seven billion, six hundred forty-eight million, fifteen thousand, three hundred ninety-one".