28115056349 has 2 divisors, whose sum is σ = 28115056350. Its totient is φ = 28115056348.

The previous prime is 28115056283. The next prime is 28115056357. The reversal of 28115056349 is 94365051182.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25378720249 + 2736336100 = 159307^2 + 52310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28115056349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28115050349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14057528174 + 14057528175.

It is an arithmetic number, because the mean of its divisors is an integer number (14057528175).

Almost surely, 2^28115056349 is an apocalyptic number.

It is an amenable number.

28115056349 is a deficient number, since it is larger than the sum of its proper divisors (1).

28115056349 is an equidigital number, since it uses as much as digits as its factorization.

28115056349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 28115056349 in words is "twenty-eight billion, one hundred fifteen million, fifty-six thousand, three hundred forty-nine".