57807242820 has 72 divisors (see below), whose sum is σ = 175767359040. Its totient is φ = 15378454080.

The previous prime is 57807242803. The next prime is 57807242827. The reversal of 57807242820 is 2824270875.

57807242820 is a `hidden beast` number, since 578 + 0 + 72 + 4 + 2 + 8 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (57807242827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 307816 + ... + 458655.

It is an arithmetic number, because the mean of its divisors is an integer number (2441213320).

Almost surely, 2^57807242820 is an apocalyptic number.

It is an amenable number.

57807242820 is an abundant number, since it is smaller than the sum of its proper divisors (117960116220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57807242820 is a wasteful number, since it uses less digits than its factorization.

57807242820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766905 (or 766900 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 45.

The spelling of 57807242820 in words is "fifty-seven billion, eight hundred seven million, two hundred forty-two thousand, eight hundred twenty".