28063125773 has 4 divisors (see below), whose sum is σ = 28069562208. Its totient is φ = 28056689340.

The previous prime is 28063125763. The next prime is 28063125791. The reversal of 28063125773 is 37752136082.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37752136082 = 2 ⋅18876068041.

It is a cyclic number.

It is not a de Polignac number, because 28063125773 - 2⁴ = 28063125757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28063125743) 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, 3211673 + ... + 3220398.

It is an arithmetic number, because the mean of its divisors is an integer number (7017390552).

Almost surely, 2^28063125773 is an apocalyptic number.

It is an amenable number.

28063125773 is a deficient number, since it is larger than the sum of its proper divisors (6436435).

28063125773 is an equidigital number, since it uses as much as digits as its factorization.

28063125773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6436434.

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 28063125773 in words is "twenty-eight billion, sixty-three million, one hundred twenty-five thousand, seven hundred seventy-three".