75115317811 has 4 divisors (see below), whose sum is σ = 75120436512. Its totient is φ = 75110199112.

The previous prime is 75115317803. The next prime is 75115317841. The reversal of 75115317811 is 11871351157.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11871351157 = 1877 ⋅6324641.

It is a cyclic number.

It is not a de Polignac number, because 75115317811 - 2³ = 75115317803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75115317841) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 2537275 + ... + 2566708.

It is an arithmetic number, because the mean of its divisors is an integer number (18780109128).

Almost surely, 2^75115317811 is an apocalyptic number.

75115317811 is a deficient number, since it is larger than the sum of its proper divisors (5118701).

75115317811 is a wasteful number, since it uses less digits than its factorization.

75115317811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5118700.

The product of its digits is 29400, while the sum is 40.

Adding to 75115317811 its reverse (11871351157), we get a palindrome (86986668968).

The spelling of 75115317811 in words is "seventy-five billion, one hundred fifteen million, three hundred seventeen thousand, eight hundred eleven".