28140871093 has 2 divisors, whose sum is σ = 28140871094. Its totient is φ = 28140871092.

The previous prime is 28140871091. The next prime is 28140871153. The reversal of 28140871093 is 39017804182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18000783889 + 10140087204 = 134167^2 + 100698^2 .

It is a cyclic number.

It is not a de Polignac number, because 28140871093 - 2¹ = 28140871091 is a prime.

Together with 28140871091, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28140871091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14070435546 + 14070435547.

It is an arithmetic number, because the mean of its divisors is an integer number (14070435547).

Almost surely, 2^28140871093 is an apocalyptic number.

It is an amenable number.

28140871093 is a deficient number, since it is larger than the sum of its proper divisors (1).

28140871093 is an equidigital number, since it uses as much as digits as its factorization.

28140871093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 43.

The spelling of 28140871093 in words is "twenty-eight billion, one hundred forty million, eight hundred seventy-one thousand, ninety-three".