117971315543 has 2 divisors, whose sum is σ = 117971315544. Its totient is φ = 117971315542.

The previous prime is 117971315537. The next prime is 117971315563. The reversal of 117971315543 is 345513179711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117971315543 - 2²⁴ = 117954538327 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117971315503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58985657771 + 58985657772.

It is an arithmetic number, because the mean of its divisors is an integer number (58985657772).

Almost surely, 2^117971315543 is an apocalyptic number.

117971315543 is a deficient number, since it is larger than the sum of its proper divisors (1).

117971315543 is an equidigital number, since it uses as much as digits as its factorization.

117971315543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 396900, while the sum is 47.

The spelling of 117971315543 in words is "one hundred seventeen billion, nine hundred seventy-one million, three hundred fifteen thousand, five hundred forty-three".