57812884820 has 24 divisors (see below), whose sum is σ = 122293246824. Its totient is φ = 22956356096.

The previous prime is 57812884817. The next prime is 57812884859. The reversal of 57812884820 is 2848821875.

It can be written as a sum of positive squares in 4 ways, for example, as 4376464 + 57808508356 = 2092^2 + 240434^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10547057 + ... + 10552536.

It is an arithmetic number, because the mean of its divisors is an integer number (5095551951).

Almost surely, 2^57812884820 is an apocalyptic number.

It is an amenable number.

57812884820 is an abundant number, since it is smaller than the sum of its proper divisors (64480362004).

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

57812884820 is a wasteful number, since it uses less digits than its factorization.

57812884820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21099739 (or 21099737 counting only the distinct ones).

The product of its (nonzero) digits is 2293760, while the sum is 53.

The spelling of 57812884820 in words is "fifty-seven billion, eight hundred twelve million, eight hundred eighty-four thousand, eight hundred twenty".