11172161758 has 4 divisors (see below), whose sum is σ = 16758242640. Its totient is φ = 5586080878.

The previous prime is 11172161717. The next prime is 11172161783. The reversal of 11172161758 is 85716127111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85716127111 = 131 ⋅654321581.

It is a self number, because there is not a number n which added to its sum of digits gives 11172161758.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2793040438 + ... + 2793040441.

It is an arithmetic number, because the mean of its divisors is an integer number (4189560660).

Almost surely, 2^11172161758 is an apocalyptic number.

11172161758 is a deficient number, since it is larger than the sum of its proper divisors (5586080882).

11172161758 is an equidigital number, since it uses as much as digits as its factorization.

11172161758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5586080881.

The product of its digits is 23520, while the sum is 40.

Adding to 11172161758 its reverse (85716127111), we get a palindrome (96888288869).

The spelling of 11172161758 in words is "eleven billion, one hundred seventy-two million, one hundred sixty-one thousand, seven hundred fifty-eight".