57828279991 has 2 divisors, whose sum is σ = 57828279992. Its totient is φ = 57828279990.

The previous prime is 57828279983. The next prime is 57828280021. The reversal of 57828279991 is 19997282875.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57828279991 - 2³ = 57828279983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57828279911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28914139995 + 28914139996.

It is an arithmetic number, because the mean of its divisors is an integer number (28914139996).

Almost surely, 2^57828279991 is an apocalyptic number.

57828279991 is a deficient number, since it is larger than the sum of its proper divisors (1).

57828279991 is an equidigital number, since it uses as much as digits as its factorization.

57828279991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45722880, while the sum is 67.

The spelling of 57828279991 in words is "fifty-seven billion, eight hundred twenty-eight million, two hundred seventy-nine thousand, nine hundred ninety-one".