57079874209 has 2 divisors, whose sum is σ = 57079874210. Its totient is φ = 57079874208.

The previous prime is 57079874197. The next prime is 57079874213. The reversal of 57079874209 is 90247897075.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33225998400 + 23853875809 = 182280^2 + 154447^2 .

It is a cyclic number.

It is not a de Polignac number, because 57079874209 - 2⁵ = 57079874177 is a prime.

It is a super-2 number, since 2×57079874209² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57079824209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28539937104 + 28539937105.

It is an arithmetic number, because the mean of its divisors is an integer number (28539937105).

Almost surely, 2^57079874209 is an apocalyptic number.

It is an amenable number.

57079874209 is a deficient number, since it is larger than the sum of its proper divisors (1).

57079874209 is an equidigital number, since it uses as much as digits as its factorization.

57079874209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8890560, while the sum is 58.

The spelling of 57079874209 in words is "fifty-seven billion, seventy-nine million, eight hundred seventy-four thousand, two hundred nine".