57129728399 has 2 divisors, whose sum is σ = 57129728400. Its totient is φ = 57129728398.

The previous prime is 57129728389. The next prime is 57129728417. The reversal of 57129728399 is 99382792175.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57129728399 - 2²⁰ = 57128679823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57129728329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28564864199 + 28564864200.

It is an arithmetic number, because the mean of its divisors is an integer number (28564864200).

Almost surely, 2^57129728399 is an apocalyptic number.

57129728399 is a deficient number, since it is larger than the sum of its proper divisors (1).

57129728399 is an equidigital number, since it uses as much as digits as its factorization.

57129728399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17146080, while the sum is 62.

The spelling of 57129728399 in words is "fifty-seven billion, one hundred twenty-nine million, seven hundred twenty-eight thousand, three hundred ninety-nine".