28679409133 has 2 divisors, whose sum is σ = 28679409134. Its totient is φ = 28679409132.

The previous prime is 28679409107. The next prime is 28679409181. The reversal of 28679409133 is 33190497682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23986885129 + 4692524004 = 154877^2 + 68502^2 .

It is a cyclic number.

It is not a de Polignac number, because 28679409133 - 2²¹ = 28677311981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28679409833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14339704566 + 14339704567.

It is an arithmetic number, because the mean of its divisors is an integer number (14339704567).

Almost surely, 2^28679409133 is an apocalyptic number.

It is an amenable number.

28679409133 is a deficient number, since it is larger than the sum of its proper divisors (1).

28679409133 is an equidigital number, since it uses as much as digits as its factorization.

28679409133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 52.

The spelling of 28679409133 in words is "twenty-eight billion, six hundred seventy-nine million, four hundred nine thousand, one hundred thirty-three".