28673963117 has 2 divisors, whose sum is σ = 28673963118. Its totient is φ = 28673963116.

The previous prime is 28673963113. The next prime is 28673963141. The reversal of 28673963117 is 71136937682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25691601796 + 2982361321 = 160286^2 + 54611^2 .

It is a cyclic number.

It is not a de Polignac number, because 28673963117 - 2² = 28673963113 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28673963111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14336981558 + 14336981559.

It is an arithmetic number, because the mean of its divisors is an integer number (14336981559).

Almost surely, 2^28673963117 is an apocalyptic number.

It is an amenable number.

28673963117 is a deficient number, since it is larger than the sum of its proper divisors (1).

28673963117 is an equidigital number, since it uses as much as digits as its factorization.

28673963117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2286144, while the sum is 53.

The spelling of 28673963117 in words is "twenty-eight billion, six hundred seventy-three million, nine hundred sixty-three thousand, one hundred seventeen".