117864500549 has 2 divisors, whose sum is σ = 117864500550. Its totient is φ = 117864500548.

The previous prime is 117864500531. The next prime is 117864500581. The reversal of 117864500549 is 945005468711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117499499524 + 365001025 = 342782^2 + 19105^2 .

It is a cyclic number.

It is not a de Polignac number, because 117864500549 - 2²⁴ = 117847723333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 117864500497 and 117864500506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117864508549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58932250274 + 58932250275.

It is an arithmetic number, because the mean of its divisors is an integer number (58932250275).

Almost surely, 2^117864500549 is an apocalyptic number.

It is an amenable number.

117864500549 is a deficient number, since it is larger than the sum of its proper divisors (1).

117864500549 is an equidigital number, since it uses as much as digits as its factorization.

117864500549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1209600, while the sum is 50.

The spelling of 117864500549 in words is "one hundred seventeen billion, eight hundred sixty-four million, five hundred thousand, five hundred forty-nine".