116665511 has 2 divisors, whose sum is σ = 116665512. Its totient is φ = 116665510.

The previous prime is 116665481. The next prime is 116665513. The reversal of 116665511 is 115566611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 116665511 - 2⁶ = 116665447 is a prime.

It is a super-2 number, since 2×116665511² = 27221682913782242, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 116665513, it forms a pair of twin primes.

It is a Chen prime.

It is a zygodrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116665513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58332755 + 58332756.

It is an arithmetic number, because the mean of its divisors is an integer number (58332756).

Almost surely, 2^116665511 is an apocalyptic number.

116665511 is a deficient number, since it is larger than the sum of its proper divisors (1).

116665511 is an equidigital number, since it uses as much as digits as its factorization.

116665511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 32.

The square root of 116665511 is about 10801.1810002425. The cubic root of 116665511 is about 488.6307895364.

The spelling of 116665511 in words is "one hundred sixteen million, six hundred sixty-five thousand, five hundred eleven".