4057815545728 has 64 divisors (see below), whose sum is σ = 9239207205600. Its totient is φ = 1738982725632.

The previous prime is 4057815545723. The next prime is 4057815545809. The reversal of 4057815545728 is 8275455187504.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4057815545723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21615726 + ... + 21802642.

Almost surely, 2^{4057815545728} is an apocalyptic number.

It is an amenable number.

4057815545728 is an abundant number, since it is smaller than the sum of its proper divisors (5181391659872).

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

4057815545728 is a wasteful number, since it uses less digits than its factorization.

4057815545728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211167 (or 211155 counting only the distinct ones).

The product of its (nonzero) digits is 62720000, while the sum is 61.

The spelling of 4057815545728 in words is "four trillion, fifty-seven billion, eight hundred fifteen million, five hundred forty-five thousand, seven hundred twenty-eight".