57021850272 has 96 divisors (see below), whose sum is σ = 151346458368. Its totient is φ = 18796732416.

The previous prime is 57021850261. The next prime is 57021850273. The reversal of 57021850272 is 27205812075.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 57021850272.

It is not an unprimeable number, because it can be changed into a prime (57021850273) 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, 5016948 + ... + 5028300.

It is an arithmetic number, because the mean of its divisors is an integer number (1576525608).

Almost surely, 2^57021850272 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 57021850272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75673229184).

57021850272 is an abundant number, since it is smaller than the sum of its proper divisors (94324608096).

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

57021850272 is a wasteful number, since it uses less digits than its factorization.

57021850272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11942 (or 11934 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 39.

The spelling of 57021850272 in words is "fifty-seven billion, twenty-one million, eight hundred fifty thousand, two hundred seventy-two".