28374777089 has 2 divisors, whose sum is σ = 28374777090. Its totient is φ = 28374777088.

The previous prime is 28374777071. The next prime is 28374777157. The reversal of 28374777089 is 98077747382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27401836225 + 972940864 = 165535^2 + 31192^2 .

It is a cyclic number.

It is not a de Polignac number, because 28374777089 - 2²⁸ = 28106341633 is a prime.

It is not a weakly prime, because it can be changed into another prime (28374770089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14187388544 + 14187388545.

It is an arithmetic number, because the mean of its divisors is an integer number (14187388545).

Almost surely, 2^28374777089 is an apocalyptic number.

It is an amenable number.

28374777089 is a deficient number, since it is larger than the sum of its proper divisors (1).

28374777089 is an equidigital number, since it uses as much as digits as its factorization.

28374777089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33191424, while the sum is 62.

The spelling of 28374777089 in words is "twenty-eight billion, three hundred seventy-four million, seven hundred seventy-seven thousand, eighty-nine".