117164649281 has 4 divisors (see below), whose sum is σ = 124056687492. Its totient is φ = 110272611072.

The previous prime is 117164649233. The next prime is 117164649299. The reversal of 117164649281 is 182946461711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68652384256 + 48512265025 = 262016^2 + 220255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117164649281 is a prime.

It is a super-2 number, since 2×117164649281² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117164646281) 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 in 3 ways as a sum of consecutive naturals, for example, 3446019080 + ... + 3446019113.

It is an arithmetic number, because the mean of its divisors is an integer number (31014171873).

Almost surely, 2^117164649281 is an apocalyptic number.

It is an amenable number.

117164649281 is a deficient number, since it is larger than the sum of its proper divisors (6892038211).

117164649281 is an equidigital number, since it uses as much as digits as its factorization.

117164649281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6892038210.

The product of its digits is 580608, while the sum is 50.

The spelling of 117164649281 in words is "one hundred seventeen billion, one hundred sixty-four million, six hundred forty-nine thousand, two hundred eighty-one".