117911751 has 8 divisors (see below), whose sum is σ = 157530240. Its totient is φ = 78450552.

The previous prime is 117911741. The next prime is 117911791. The reversal of 117911751 is 157119711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 117911751 - 2¹³ = 117903559 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117911741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37561 + ... + 40578.

It is an arithmetic number, because the mean of its divisors is an integer number (19691280).

Almost surely, 2^117911751 is an apocalyptic number.

117911751 is a deficient number, since it is larger than the sum of its proper divisors (39618489).

117911751 is an equidigital number, since it uses as much as digits as its factorization.

117911751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78645.

The product of its digits is 2205, while the sum is 33.

The square root of 117911751 is about 10858.7177419804. The cubic root of 117911751 is about 490.3645087292.

The spelling of 117911751 in words is "one hundred seventeen million, nine hundred eleven thousand, seven hundred fifty-one".