57147748857 has 16 divisors (see below), whose sum is σ = 84667327680. Its totient is φ = 38096701056.

The previous prime is 57147748849. The next prime is 57147748871. The reversal of 57147748857 is 75884774175.

57147748857 is a `hidden beast` number, since 5 + 7 + 147 + 7 + 488 + 5 + 7 = 666.

It is not a de Polignac number, because 57147748857 - 2³ = 57147748849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57147748794 and 57147748803.

It is not an unprimeable number, because it can be changed into a prime (57147748817) 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, 788718 + ... + 858120.

It is an arithmetic number, because the mean of its divisors is an integer number (5291707980).

Almost surely, 2^57147748857 is an apocalyptic number.

It is an amenable number.

57147748857 is a deficient number, since it is larger than the sum of its proper divisors (27519578823).

57147748857 is a wasteful number, since it uses less digits than its factorization.

57147748857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99909 (or 99903 counting only the distinct ones).

The product of its digits is 61465600, while the sum is 63.

The spelling of 57147748857 in words is "fifty-seven billion, one hundred forty-seven million, seven hundred forty-eight thousand, eight hundred fifty-seven".