28982605117 has 2 divisors, whose sum is σ = 28982605118. Its totient is φ = 28982605116.

The previous prime is 28982605039. The next prime is 28982605129. The reversal of 28982605117 is 71150628982.

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., 28678067716 + 304537401 = 169346^2 + 17451^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28982605117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28982605147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14491302558 + 14491302559.

It is an arithmetic number, because the mean of its divisors is an integer number (14491302559).

Almost surely, 2^28982605117 is an apocalyptic number.

It is an amenable number.

28982605117 is a deficient number, since it is larger than the sum of its proper divisors (1).

28982605117 is an equidigital number, since it uses as much as digits as its factorization.

28982605117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 49.

The spelling of 28982605117 in words is "twenty-eight billion, nine hundred eighty-two million, six hundred five thousand, one hundred seventeen".