117156511 has 2 divisors, whose sum is σ = 117156512. Its totient is φ = 117156510.

The previous prime is 117156497. The next prime is 117156517. The reversal of 117156511 is 115651711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117156511 - 2²³ = 108767903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117156511.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117156517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58578255 + 58578256.

It is an arithmetic number, because the mean of its divisors is an integer number (58578256).

Almost surely, 2^117156511 is an apocalyptic number.

117156511 is a deficient number, since it is larger than the sum of its proper divisors (1).

117156511 is an equidigital number, since it uses as much as digits as its factorization.

117156511 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1050, while the sum is 28.

The square root of 117156511 is about 10823.8861320692. The cubic root of 117156511 is about 489.3153161137.

The spelling of 117156511 in words is "one hundred seventeen million, one hundred fifty-six thousand, five hundred eleven".