117155598399 has 32 divisors (see below), whose sum is σ = 198468794880. Its totient is φ = 66908894400.

The previous prime is 117155598367. The next prime is 117155598401. The reversal of 117155598399 is 993895551711.

117155598399 is a `hidden beast` number, since 1 + 1 + 7 + 1 + 5 + 5 + 598 + 39 + 9 = 666.

It is a Cunningham number, because it is equal to 342280²-1.

It is not a de Polignac number, because 117155598399 - 2⁵ = 117155598367 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117155598799) 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 31 ways as a sum of consecutive naturals, for example, 171139 + ... + 513419.

It is an arithmetic number, because the mean of its divisors is an integer number (6202149840).

Almost surely, 2^117155598399 is an apocalyptic number.

117155598399 is a deficient number, since it is larger than the sum of its proper divisors (81313196481).

117155598399 is a wasteful number, since it uses less digits than its factorization.

117155598399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344108 (or 344102 counting only the distinct ones).

The product of its digits is 15309000, while the sum is 63.

The spelling of 117155598399 in words is "one hundred seventeen billion, one hundred fifty-five million, five hundred ninety-eight thousand, three hundred ninety-nine".