57086387281 has 16 divisors (see below), whose sum is σ = 74918568960. Its totient is φ = 42141692880.

The previous prime is 57086387261. The next prime is 57086387287. The reversal of 57086387281 is 18278368075.

It is a happy number.

It is not a de Polignac number, because 57086387281 - 2⁵ = 57086387249 is a prime.

It is a super-2 number, since 2×57086387281² (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 (57086387287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19508581 + ... + 19511506.

It is an arithmetic number, because the mean of its divisors is an integer number (4682410560).

Almost surely, 2^57086387281 is an apocalyptic number.

It is an amenable number.

57086387281 is a deficient number, since it is larger than the sum of its proper divisors (17832181679).

57086387281 is a wasteful number, since it uses less digits than its factorization.

57086387281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39020124.

The product of its (nonzero) digits is 4515840, while the sum is 55.

The spelling of 57086387281 in words is "fifty-seven billion, eighty-six million, three hundred eighty-seven thousand, two hundred eighty-one".