57222144128 has 64 divisors (see below), whose sum is σ = 115915345920. Its totient is φ = 28133683200.

The previous prime is 57222144103. The next prime is 57222144139. The reversal of 57222144128 is 82144122275.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 57222144091 and 57222144100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1821353 + ... + 1852503.

It is an arithmetic number, because the mean of its divisors is an integer number (1811177280).

Almost surely, 2^57222144128 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 57222144128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57957672960).

57222144128 is an abundant number, since it is smaller than the sum of its proper divisors (58693201792).

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

57222144128 is a wasteful number, since it uses less digits than its factorization.

57222144128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31405 (or 31393 counting only the distinct ones).

The product of its digits is 71680, while the sum is 38.

The spelling of 57222144128 in words is "fifty-seven billion, two hundred twenty-two million, one hundred forty-four thousand, one hundred twenty-eight".