28099118431 has 2 divisors, whose sum is σ = 28099118432. Its totient is φ = 28099118430.

The previous prime is 28099118417. The next prime is 28099118459. The reversal of 28099118431 is 13481199082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28099118431 - 2²⁹ = 27562247519 is a prime.

It is a super-2 number, since 2×28099118431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28099118471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14049559215 + 14049559216.

It is an arithmetic number, because the mean of its divisors is an integer number (14049559216).

Almost surely, 2^28099118431 is an apocalyptic number.

28099118431 is a deficient number, since it is larger than the sum of its proper divisors (1).

28099118431 is an equidigital number, since it uses as much as digits as its factorization.

28099118431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 46.

The spelling of 28099118431 in words is "twenty-eight billion, ninety-nine million, one hundred eighteen thousand, four hundred thirty-one".