57128468069 has 2 divisors, whose sum is σ = 57128468070. Its totient is φ = 57128468068.

The previous prime is 57128468009. The next prime is 57128468083. The reversal of 57128468069 is 96086482175.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56578331044 + 550137025 = 237862^2 + 23455^2 .

It is a cyclic number.

It is not a de Polignac number, because 57128468069 - 2¹⁶ = 57128402533 is a prime.

It is a super-2 number, since 2×57128468069² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57128468009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28564234034 + 28564234035.

It is an arithmetic number, because the mean of its divisors is an integer number (28564234035).

Almost surely, 2^57128468069 is an apocalyptic number.

It is an amenable number.

57128468069 is a deficient number, since it is larger than the sum of its proper divisors (1).

57128468069 is an equidigital number, since it uses as much as digits as its factorization.

57128468069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5806080, while the sum is 56.

The spelling of 57128468069 in words is "fifty-seven billion, one hundred twenty-eight million, four hundred sixty-eight thousand, sixty-nine".