28374728677 has 2 divisors, whose sum is σ = 28374728678. Its totient is φ = 28374728676.

The previous prime is 28374728659. The next prime is 28374728731. The reversal of 28374728677 is 77682747382.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26764632801 + 1610095876 = 163599^2 + 40126^2 .

It is a cyclic number.

It is not a de Polignac number, because 28374728677 - 2⁷ = 28374728549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28374728617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14187364338 + 14187364339.

It is an arithmetic number, because the mean of its divisors is an integer number (14187364339).

Almost surely, 2^28374728677 is an apocalyptic number.

It is an amenable number.

28374728677 is a deficient number, since it is larger than the sum of its proper divisors (1).

28374728677 is an equidigital number, since it uses as much as digits as its factorization.

28374728677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44255232, while the sum is 61.

The spelling of 28374728677 in words is "twenty-eight billion, three hundred seventy-four million, seven hundred twenty-eight thousand, six hundred seventy-seven".