117111551761 has 4 divisors (see below), whose sum is σ = 117666583024. Its totient is φ = 116556520500.

The previous prime is 117111551621. The next prime is 117111551779. The reversal of 117111551761 is 167155111711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 167155111711 = 7 ⋅23879301673.

It is a cyclic number.

It is not a de Polignac number, because 117111551761 - 2¹⁷ = 117111420689 is a prime.

It is a super-2 number, since 2×117111551761² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117111551761.

It is not an unprimeable number, because it can be changed into a prime (117111501761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277515315 + ... + 277515736.

It is an arithmetic number, because the mean of its divisors is an integer number (29416645756).

Almost surely, 2^117111551761 is an apocalyptic number.

It is an amenable number.

117111551761 is a deficient number, since it is larger than the sum of its proper divisors (555031263).

117111551761 is an equidigital number, since it uses as much as digits as its factorization.

117111551761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555031262.

The product of its digits is 7350, while the sum is 37.

The spelling of 117111551761 in words is "one hundred seventeen billion, one hundred eleven million, five hundred fifty-one thousand, seven hundred sixty-one".