28797162569 has 16 divisors (see below), whose sum is σ = 33521734656. Its totient is φ = 24228330000.

The previous prime is 28797162547. The next prime is 28797162593. The reversal of 28797162569 is 96526179782.

It is not a de Polignac number, because 28797162569 - 2²⁴ = 28780385353 is a prime.

It is a super-2 number, since 2×28797162569² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28797165569) 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 15 ways as a sum of consecutive naturals, for example, 14807 + ... + 240444.

It is an arithmetic number, because the mean of its divisors is an integer number (2095108416).

Almost surely, 2^28797162569 is an apocalyptic number.

It is an amenable number.

28797162569 is a deficient number, since it is larger than the sum of its proper divisors (4724572087).

28797162569 is a wasteful number, since it uses less digits than its factorization.

28797162569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255556.

The product of its digits is 22861440, while the sum is 62.

The spelling of 28797162569 in words is "twenty-eight billion, seven hundred ninety-seven million, one hundred sixty-two thousand, five hundred sixty-nine".