117573911729 has 4 divisors (see below), whose sum is σ = 119792287476. Its totient is φ = 115355535984.

The previous prime is 117573911711. The next prime is 117573911759. The reversal of 117573911729 is 927119375711.

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

It can be written as a sum of positive squares in 2 ways, for example, as 63169282225 + 54404629504 = 251335^2 + 233248^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117573911729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53), and also a Moran number because the ratio is a prime number: 2218375693 = 117573911729 / (1 + 1 + 7 + 5 + 7 + 3 + 9 + 1 + 1 + 7 + 2 + 9).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (117573911759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1109187794 + ... + 1109187899.

It is an arithmetic number, because the mean of its divisors is an integer number (29948071869).

Almost surely, 2^117573911729 is an apocalyptic number.

It is an amenable number.

117573911729 is a deficient number, since it is larger than the sum of its proper divisors (2218375747).

117573911729 is an equidigital number, since it uses as much as digits as its factorization.

117573911729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2218375746.

The product of its digits is 833490, while the sum is 53.

The spelling of 117573911729 in words is "one hundred seventeen billion, five hundred seventy-three million, nine hundred eleven thousand, seven hundred twenty-nine".