28056369597 has 4 divisors (see below), whose sum is σ = 37408492800. Its totient is φ = 18704246396.

The previous prime is 28056369547. The next prime is 28056369599. The reversal of 28056369597 is 79596365082.

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.

It is a cyclic number.

It is not a de Polignac number, because 28056369597 - 2⁷ = 28056369469 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28056369597.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28056369599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4676061597 + ... + 4676061602.

It is an arithmetic number, because the mean of its divisors is an integer number (9352123200).

Almost surely, 2^28056369597 is an apocalyptic number.

It is an amenable number.

28056369597 is a deficient number, since it is larger than the sum of its proper divisors (9352123203).

28056369597 is an equidigital number, since it uses as much as digits as its factorization.

28056369597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9352123202.

The product of its (nonzero) digits is 24494400, while the sum is 60.

The spelling of 28056369597 in words is "twenty-eight billion, fifty-six million, three hundred sixty-nine thousand, five hundred ninety-seven".