28445120037672 has 64 divisors (see below), whose sum is σ = 79912711831680. Its totient is φ = 8371807901952.

The previous prime is 28445120037667. The next prime is 28445120037707. The reversal of 28445120037672 is 27673002154482.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1981954923 + ... + 1981969274.

It is an arithmetic number, because the mean of its divisors is an integer number (1248636122370).

Almost surely, 2^{28445120037672} is an apocalyptic number.

It is an amenable number.

28445120037672 is an abundant number, since it is smaller than the sum of its proper divisors (51467591794008).

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

28445120037672 is a wasteful number, since it uses less digits than its factorization.

28445120037672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3963924242 (or 3963924238 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 51.

The spelling of 28445120037672 in words is "twenty-eight trillion, four hundred forty-five billion, one hundred twenty million, thirty-seven thousand, six hundred seventy-two".