57107128811 has 4 divisors (see below), whose sum is σ = 57543061224. Its totient is φ = 56671196400.

The previous prime is 57107128777. The next prime is 57107128823. The reversal of 57107128811 is 11882170175.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57107128811 - 2³⁰ = 56033386987 is a prime.

It is a super-2 number, since 2×57107128811² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57107121811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217966010 + ... + 217966271.

It is an arithmetic number, because the mean of its divisors is an integer number (14385765306).

Almost surely, 2^57107128811 is an apocalyptic number.

57107128811 is a deficient number, since it is larger than the sum of its proper divisors (435932413).

57107128811 is a wasteful number, since it uses less digits than its factorization.

57107128811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435932412.

The product of its (nonzero) digits is 31360, while the sum is 41.

Adding to 57107128811 its reverse (11882170175), we get a palindrome (68989298986).

The spelling of 57107128811 in words is "fifty-seven billion, one hundred seven million, one hundred twenty-eight thousand, eight hundred eleven".