28802177329 has 2 divisors, whose sum is σ = 28802177330. Its totient is φ = 28802177328.

The previous prime is 28802177297. The next prime is 28802177357. The reversal of 28802177329 is 92377120882.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15819853729 + 12982323600 = 125777^2 + 113940^2 .

It is a cyclic number.

It is not a de Polignac number, because 28802177329 - 2⁵ = 28802177297 is a prime.

It is not a weakly prime, because it can be changed into another prime (28802171329) 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 as a sum of consecutive naturals, namely, 14401088664 + 14401088665.

It is an arithmetic number, because the mean of its divisors is an integer number (14401088665).

Almost surely, 2^28802177329 is an apocalyptic number.

It is an amenable number.

28802177329 is a deficient number, since it is larger than the sum of its proper divisors (1).

28802177329 is an equidigital number, since it uses as much as digits as its factorization.

28802177329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 49.

The spelling of 28802177329 in words is "twenty-eight billion, eight hundred two million, one hundred seventy-seven thousand, three hundred twenty-nine".