28986966293 has 2 divisors, whose sum is σ = 28986966294. Its totient is φ = 28986966292.

The previous prime is 28986966251. The next prime is 28986966311. The reversal of 28986966293 is 39266968982.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19138785649 + 9848180644 = 138343^2 + 99238^2 .

It is a cyclic number.

It is not a de Polignac number, because 28986966293 - 2²⁴ = 28970189077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28986966193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14493483146 + 14493483147.

It is an arithmetic number, because the mean of its divisors is an integer number (14493483147).

Almost surely, 2^28986966293 is an apocalyptic number.

It is an amenable number.

28986966293 is a deficient number, since it is larger than the sum of its proper divisors (1).

28986966293 is an equidigital number, since it uses as much as digits as its factorization.

28986966293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120932352, while the sum is 68.

The spelling of 28986966293 in words is "twenty-eight billion, nine hundred eighty-six million, nine hundred sixty-six thousand, two hundred ninety-three".