117871261597 has 2 divisors, whose sum is σ = 117871261598. Its totient is φ = 117871261596.

The previous prime is 117871261559. The next prime is 117871261637. The reversal of 117871261597 is 795162178711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112298041881 + 5573219716 = 335109^2 + 74654^2 .

It is an emirp because it is prime and its reverse (795162178711) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117871261597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117871261997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58935630798 + 58935630799.

It is an arithmetic number, because the mean of its divisors is an integer number (58935630799).

Almost surely, 2^117871261597 is an apocalyptic number.

It is an amenable number.

117871261597 is a deficient number, since it is larger than the sum of its proper divisors (1).

117871261597 is an equidigital number, since it uses as much as digits as its factorization.

117871261597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1481760, while the sum is 55.

The spelling of 117871261597 in words is "one hundred seventeen billion, eight hundred seventy-one million, two hundred sixty-one thousand, five hundred ninety-seven".