117885102291 has 12 divisors (see below), whose sum is σ = 185758343160. Its totient is φ = 71445516480.

The previous prime is 117885102253. The next prime is 117885102299. The reversal of 117885102291 is 192201588711.

It is not a de Polignac number, because 117885102291 - 2⁷ = 117885102163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (117885102299) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 595379206 + ... + 595379403.

It is an arithmetic number, because the mean of its divisors is an integer number (15479861930).

Almost surely, 2^117885102291 is an apocalyptic number.

117885102291 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

117885102291 is a deficient number, since it is larger than the sum of its proper divisors (67873240869).

117885102291 is a wasteful number, since it uses less digits than its factorization.

117885102291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190758626 (or 1190758623 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 45.

Adding to 117885102291 its sum of digits (45), we get a square (117885102336 = 343344²).

The spelling of 117885102291 in words is "one hundred seventeen billion, eight hundred eighty-five million, one hundred two thousand, two hundred ninety-one".