57215851019 has 2 divisors, whose sum is σ = 57215851020. Its totient is φ = 57215851018.

The previous prime is 57215851009. The next prime is 57215851037. The reversal of 57215851019 is 91015851275.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57215851019 - 2¹² = 57215846923 is a prime.

It is a super-2 number, since 2×57215851019² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57215851009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28607925509 + 28607925510.

It is an arithmetic number, because the mean of its divisors is an integer number (28607925510).

Almost surely, 2^57215851019 is an apocalyptic number.

57215851019 is a deficient number, since it is larger than the sum of its proper divisors (1).

57215851019 is an equidigital number, since it uses as much as digits as its factorization.

57215851019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126000, while the sum is 44.

The spelling of 57215851019 in words is "fifty-seven billion, two hundred fifteen million, eight hundred fifty-one thousand, nineteen".