57851855881 has 4 divisors (see below), whose sum is σ = 57862066500. Its totient is φ = 57841645264.

The previous prime is 57851855879. The next prime is 57851855911. The reversal of 57851855881 is 18855815875.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31067587600 + 26784268281 = 176260^2 + 163659^2 .

It is a cyclic number.

It is not a de Polignac number, because 57851855881 - 2¹ = 57851855879 is a prime.

It is a super-2 number, since 2×57851855881² (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 (57851855821) 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, 5096806 + ... + 5108143.

It is an arithmetic number, because the mean of its divisors is an integer number (14465516625).

Almost surely, 2^57851855881 is an apocalyptic number.

It is an amenable number.

57851855881 is a deficient number, since it is larger than the sum of its proper divisors (10210619).

57851855881 is a wasteful number, since it uses less digits than its factorization.

57851855881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10210618.

The product of its digits is 17920000, while the sum is 61.

The spelling of 57851855881 in words is "fifty-seven billion, eight hundred fifty-one million, eight hundred fifty-five thousand, eight hundred eighty-one".