28465481687329 has 2 divisors, whose sum is σ = 28465481687330. Its totient is φ = 28465481687328.

The previous prime is 28465481687327. The next prime is 28465481687339. The reversal of 28465481687329 is 92378618456482.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27202222580625 + 1263259106704 = 5215575^2 + 1123948^2 .

It is a cyclic number.

It is not a de Polignac number, because 28465481687329 - 2¹ = 28465481687327 is a prime.

Together with 28465481687327, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28465481687327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14232740843664 + 14232740843665.

It is an arithmetic number, because the mean of its divisors is an integer number (14232740843665).

Almost surely, 2^{28465481687329} is an apocalyptic number.

It is an amenable number.

28465481687329 is a deficient number, since it is larger than the sum of its proper divisors (1).

28465481687329 is an equidigital number, since it uses as much as digits as its factorization.

28465481687329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1114767360, while the sum is 73.

The spelling of 28465481687329 in words is "twenty-eight trillion, four hundred sixty-five billion, four hundred eighty-one million, six hundred eighty-seven thousand, three hundred twenty-nine".