28469216769 has 16 divisors (see below), whose sum is σ = 43387267968. Its totient is φ = 16266022272.

The previous prime is 28469216717. The next prime is 28469216791. The reversal of 28469216769 is 96761296482.

It is not a de Polignac number, because 28469216769 - 2²¹ = 28467119617 is a prime.

It is a super-2 number, since 2×28469216769² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28469216669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86949 + ... + 253965.

It is an arithmetic number, because the mean of its divisors is an integer number (2711704248).

Almost surely, 2^28469216769 is an apocalyptic number.

It is an amenable number.

28469216769 is a deficient number, since it is larger than the sum of its proper divisors (14918051199).

28469216769 is a wasteful number, since it uses less digits than its factorization.

28469216769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175144.

The product of its digits is 15676416, while the sum is 60.

The spelling of 28469216769 in words is "twenty-eight billion, four hundred sixty-nine million, two hundred sixteen thousand, seven hundred sixty-nine".