28677870149 has 2 divisors, whose sum is σ = 28677870150. Its totient is φ = 28677870148.

The previous prime is 28677870119. The next prime is 28677870157. The reversal of 28677870149 is 94107877682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22557937249 + 6119932900 = 150193^2 + 78230^2 .

It is a cyclic number.

It is not a de Polignac number, because 28677870149 - 2⁸ = 28677869893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28677870119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14338935074 + 14338935075.

It is an arithmetic number, because the mean of its divisors is an integer number (14338935075).

Almost surely, 2^28677870149 is an apocalyptic number.

It is an amenable number.

28677870149 is a deficient number, since it is larger than the sum of its proper divisors (1).

28677870149 is an equidigital number, since it uses as much as digits as its factorization.

28677870149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9483264, while the sum is 59.

The spelling of 28677870149 in words is "twenty-eight billion, six hundred seventy-seven million, eight hundred seventy thousand, one hundred forty-nine".