28901079133 has 2 divisors, whose sum is σ = 28901079134. Its totient is φ = 28901079132.

The previous prime is 28901079127. The next prime is 28901079191. The reversal of 28901079133 is 33197010982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28346099769 + 554979364 = 168363^2 + 23558^2 .

It is a cyclic number.

It is not a de Polignac number, because 28901079133 - 2²⁵ = 28867524701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28901079133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28901073133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14450539566 + 14450539567.

It is an arithmetic number, because the mean of its divisors is an integer number (14450539567).

Almost surely, 2^28901079133 is an apocalyptic number.

It is an amenable number.

28901079133 is a deficient number, since it is larger than the sum of its proper divisors (1).

28901079133 is an equidigital number, since it uses as much as digits as its factorization.

28901079133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 43.

The spelling of 28901079133 in words is "twenty-eight billion, nine hundred one million, seventy-nine thousand, one hundred thirty-three".