57280254444 has 144 divisors (see below), whose sum is σ = 175677465600. Its totient is φ = 15362016768.

The previous prime is 57280254443. The next prime is 57280254469. The reversal of 57280254444 is 44445208275.

It is a self number, because there is not a number n which added to its sum of digits gives 57280254444.

It is not an unprimeable number, because it can be changed into a prime (57280254443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1605997 + ... + 1641275.

It is an arithmetic number, because the mean of its divisors is an integer number (1219982400).

Almost surely, 2^57280254444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57280254444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87838732800).

57280254444 is an abundant number, since it is smaller than the sum of its proper divisors (118397211156).

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

57280254444 is a wasteful number, since it uses less digits than its factorization.

57280254444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35692 (or 35687 counting only the distinct ones).

The product of its (nonzero) digits is 1433600, while the sum is 45.

The spelling of 57280254444 in words is "fifty-seven billion, two hundred eighty million, two hundred fifty-four thousand, four hundred forty-four".