28779151663 has 2 divisors, whose sum is σ = 28779151664. Its totient is φ = 28779151662.

The previous prime is 28779151651. The next prime is 28779151691. The reversal of 28779151663 is 36615197782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28779151663 - 2⁹ = 28779151151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28779152663) 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, 14389575831 + 14389575832.

It is an arithmetic number, because the mean of its divisors is an integer number (14389575832).

Almost surely, 2^28779151663 is an apocalyptic number.

28779151663 is a deficient number, since it is larger than the sum of its proper divisors (1).

28779151663 is an equidigital number, since it uses as much as digits as its factorization.

28779151663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3810240, while the sum is 55.

The spelling of 28779151663 in words is "twenty-eight billion, seven hundred seventy-nine million, one hundred fifty-one thousand, six hundred sixty-three".