28714288777 has 2 divisors, whose sum is σ = 28714288778. Its totient is φ = 28714288776.

The previous prime is 28714288693. The next prime is 28714288817. The reversal of 28714288777 is 77788241782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26422177401 + 2292111376 = 162549^2 + 47876^2 .

It is a cyclic number.

It is not a de Polignac number, because 28714288777 - 2¹⁵ = 28714256009 is a prime.

It is not a weakly prime, because it can be changed into another prime (28714282777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14357144388 + 14357144389.

It is an arithmetic number, because the mean of its divisors is an integer number (14357144389).

Almost surely, 2^28714288777 is an apocalyptic number.

It is an amenable number.

28714288777 is a deficient number, since it is larger than the sum of its proper divisors (1).

28714288777 is an equidigital number, since it uses as much as digits as its factorization.

28714288777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19668992, while the sum is 61.

The spelling of 28714288777 in words is "twenty-eight billion, seven hundred fourteen million, two hundred eighty-eight thousand, seven hundred seventy-seven".