28135294667 has 2 divisors, whose sum is σ = 28135294668. Its totient is φ = 28135294666.

The previous prime is 28135294633. The next prime is 28135294699. The reversal of 28135294667 is 76649253182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28135294667 - 2¹² = 28135290571 is a prime.

It is not a weakly prime, because it can be changed into another prime (28135204667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14067647333 + 14067647334.

It is an arithmetic number, because the mean of its divisors is an integer number (14067647334).

Almost surely, 2^28135294667 is an apocalyptic number.

28135294667 is a deficient number, since it is larger than the sum of its proper divisors (1).

28135294667 is an equidigital number, since it uses as much as digits as its factorization.

28135294667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 53.

The spelling of 28135294667 in words is "twenty-eight billion, one hundred thirty-five million, two hundred ninety-four thousand, six hundred sixty-seven".