28125989580379 has 4 divisors (see below), whose sum is σ = 28146655261080. Its totient is φ = 28105323899680.

The previous prime is 28125989580341. The next prime is 28125989580413. The reversal of 28125989580379 is 97308598952182.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28125989580379 - 2⁷ = 28125989580251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28125989584379) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10332838309 + ... + 10332841030.

It is an arithmetic number, because the mean of its divisors is an integer number (7036663815270).

Almost surely, 2^{28125989580379} is an apocalyptic number.

28125989580379 is a deficient number, since it is larger than the sum of its proper divisors (20665680701).

28125989580379 is a wasteful number, since it uses less digits than its factorization.

28125989580379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20665680700.

The product of its (nonzero) digits is 783820800, while the sum is 76.

The spelling of 28125989580379 in words is "twenty-eight trillion, one hundred twenty-five billion, nine hundred eighty-nine million, five hundred eighty thousand, three hundred seventy-nine".