28344265697 has 16 divisors (see below), whose sum is σ = 31580228160. Its totient is φ = 25221926400.

The previous prime is 28344265669. The next prime is 28344265709. The reversal of 28344265697 is 79656244382.

It is not a de Polignac number, because 28344265697 - 2¹² = 28344261601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28344265297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57497 + ... + 244937.

It is an arithmetic number, because the mean of its divisors is an integer number (1973764260).

Almost surely, 2^28344265697 is an apocalyptic number.

It is an amenable number.

28344265697 is a deficient number, since it is larger than the sum of its proper divisors (3235962463).

28344265697 is a wasteful number, since it uses less digits than its factorization.

28344265697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187744.

The product of its digits is 17418240, while the sum is 56.

The spelling of 28344265697 in words is "twenty-eight billion, three hundred forty-four million, two hundred sixty-five thousand, six hundred ninety-seven".