28913936791 has 2 divisors, whose sum is σ = 28913936792. Its totient is φ = 28913936790.

The previous prime is 28913936699. The next prime is 28913936797. The reversal of 28913936791 is 19763931982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28913936791 - 2¹⁵ = 28913904023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28913936797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14456968395 + 14456968396.

It is an arithmetic number, because the mean of its divisors is an integer number (14456968396).

Almost surely, 2^28913936791 is an apocalyptic number.

28913936791 is a deficient number, since it is larger than the sum of its proper divisors (1).

28913936791 is an equidigital number, since it uses as much as digits as its factorization.

28913936791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4408992, while the sum is 58.

The spelling of 28913936791 in words is "twenty-eight billion, nine hundred thirteen million, nine hundred thirty-six thousand, seven hundred ninety-one".