117826281663 has 16 divisors (see below), whose sum is σ = 161731013856. Its totient is φ = 76246289280.

The previous prime is 117826281647. The next prime is 117826281679. The reversal of 117826281663 is 366182628711.

It is an interprime number because it is at equal distance from previous prime (117826281647) and next prime (117826281679).

It is not a de Polignac number, because 117826281663 - 2⁴ = 117826281647 is a prime.

It is a super-2 number, since 2×117826281663² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117826281613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1213956 + ... + 1307417.

It is an arithmetic number, because the mean of its divisors is an integer number (10108188366).

Almost surely, 2^117826281663 is an apocalyptic number.

117826281663 is a deficient number, since it is larger than the sum of its proper divisors (43904732193).

117826281663 is a wasteful number, since it uses less digits than its factorization.

117826281663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521834.

The product of its digits is 1161216, while the sum is 51.

The spelling of 117826281663 in words is "one hundred seventeen billion, eight hundred twenty-six million, two hundred eighty-one thousand, six hundred sixty-three".