117724136666 has 4 divisors (see below), whose sum is σ = 176586205002. Its totient is φ = 58862068332.

The previous prime is 117724136633. The next prime is 117724136669. The reversal of 117724136666 is 666631427711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 96578614441 + 21145522225 = 310771^2 + 145415^2 .

It is not an unprimeable number, because it can be changed into a prime (117724136669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29431034165 + ... + 29431034168.

Almost surely, 2^117724136666 is an apocalyptic number.

117724136666 is a deficient number, since it is larger than the sum of its proper divisors (58862068336).

117724136666 is an equidigital number, since it uses as much as digits as its factorization.

117724136666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58862068335.

The product of its digits is 1524096, while the sum is 50.

The spelling of 117724136666 in words is "one hundred seventeen billion, seven hundred twenty-four million, one hundred thirty-six thousand, six hundred sixty-six".