28132464769 has 4 divisors (see below), whose sum is σ = 28193226496. Its totient is φ = 28071703044.

The previous prime is 28132464761. The next prime is 28132464793. The reversal of 28132464769 is 96746423182.

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 28132464769 - 2³ = 28132464761 is a prime.

It is a super-2 number, since 2×28132464769² (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 (28132464761) 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, 30380169 + ... + 30381094.

It is an arithmetic number, because the mean of its divisors is an integer number (7048306624).

Almost surely, 2^28132464769 is an apocalyptic number.

It is an amenable number.

28132464769 is a deficient number, since it is larger than the sum of its proper divisors (60761727).

28132464769 is an equidigital number, since it uses as much as digits as its factorization.

28132464769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60761726.

The product of its digits is 3483648, while the sum is 52.

The spelling of 28132464769 in words is "twenty-eight billion, one hundred thirty-two million, four hundred sixty-four thousand, seven hundred sixty-nine".