117144851 has 2 divisors, whose sum is σ = 117144852. Its totient is φ = 117144850.

The previous prime is 117144809. The next prime is 117144869. The reversal of 117144851 is 158441711.

It is a strong prime.

It is an emirp because it is prime and its reverse (158441711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117144851 - 2¹⁴ = 117128467 is a prime.

It is a super-2 number, since 2×117144851² = 27445832231624402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (117140851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58572425 + 58572426.

It is an arithmetic number, because the mean of its divisors is an integer number (58572426).

Almost surely, 2^117144851 is an apocalyptic number.

117144851 is a deficient number, since it is larger than the sum of its proper divisors (1).

117144851 is an equidigital number, since it uses as much as digits as its factorization.

117144851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4480, while the sum is 32.

The square root of 117144851 is about 10823.3474951144. The cubic root of 117144851 is about 489.2990825420.

The spelling of 117144851 in words is "one hundred seventeen million, one hundred forty-four thousand, eight hundred fifty-one".