28775266771 has 2 divisors, whose sum is σ = 28775266772. Its totient is φ = 28775266770.

The previous prime is 28775266753. The next prime is 28775266787. The reversal of 28775266771 is 17766257782.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28775266771 - 2⁵ = 28775266739 is a prime.

It is not a weakly prime, because it can be changed into another prime (28775261771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14387633385 + 14387633386.

It is an arithmetic number, because the mean of its divisors is an integer number (14387633386).

Almost surely, 2^28775266771 is an apocalyptic number.

28775266771 is a deficient number, since it is larger than the sum of its proper divisors (1).

28775266771 is an equidigital number, since it uses as much as digits as its factorization.

28775266771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13829760, while the sum is 58.

The spelling of 28775266771 in words is "twenty-eight billion, seven hundred seventy-five million, two hundred sixty-six thousand, seven hundred seventy-one".