116128813 has 2 divisors, whose sum is σ = 116128814. Its totient is φ = 116128812.

The previous prime is 116128787. The next prime is 116128843. The reversal of 116128813 is 318821611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70930084 + 45198729 = 8422^2 + 6723^2 .

It is an emirp because it is prime and its reverse (318821611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 116128813 - 2⁵ = 116128781 is a prime.

It is equal to p_6633553 and since 116128813 and 6633553 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116128843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58064406 + 58064407.

It is an arithmetic number, because the mean of its divisors is an integer number (58064407).

Almost surely, 2^116128813 is an apocalyptic number.

It is an amenable number.

116128813 is a deficient number, since it is larger than the sum of its proper divisors (1).

116128813 is an equidigital number, since it uses as much as digits as its factorization.

116128813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 31.

The square root of 116128813 is about 10776.3079484580. The cubic root of 116128813 is about 487.8803525651.

The spelling of 116128813 in words is "one hundred sixteen million, one hundred twenty-eight thousand, eight hundred thirteen".