28296668651 has 2 divisors, whose sum is σ = 28296668652. Its totient is φ = 28296668650.

The previous prime is 28296668611. The next prime is 28296668671. The reversal of 28296668651 is 15686669282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28296668651 - 2²² = 28292474347 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (28296668611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14148334325 + 14148334326.

It is an arithmetic number, because the mean of its divisors is an integer number (14148334326).

Almost surely, 2^28296668651 is an apocalyptic number.

28296668651 is a deficient number, since it is larger than the sum of its proper divisors (1).

28296668651 is an equidigital number, since it uses as much as digits as its factorization.

28296668651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14929920, while the sum is 59.

The spelling of 28296668651 in words is "twenty-eight billion, two hundred ninety-six million, six hundred sixty-eight thousand, six hundred fifty-one".