28131774067 has 2 divisors, whose sum is σ = 28131774068. Its totient is φ = 28131774066.

The previous prime is 28131774037. The next prime is 28131774107. The reversal of 28131774067 is 76047713182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28131774067 - 2¹⁵ = 28131741299 is a prime.

It is not a weakly prime, because it can be changed into another prime (28131774037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14065887033 + 14065887034.

It is an arithmetic number, because the mean of its divisors is an integer number (14065887034).

Almost surely, 2^28131774067 is an apocalyptic number.

28131774067 is a deficient number, since it is larger than the sum of its proper divisors (1).

28131774067 is an equidigital number, since it uses as much as digits as its factorization.

28131774067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 395136, while the sum is 46.

The spelling of 28131774067 in words is "twenty-eight billion, one hundred thirty-one million, seven hundred seventy-four thousand, sixty-seven".