75221118911 has 4 divisors (see below), whose sum is σ = 75222985824. Its totient is φ = 75219252000.

The previous prime is 75221118893. The next prime is 75221118919. The reversal of 75221118911 is 11981112257.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75221118911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75221118919) 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, 871655 + ... + 954056.

It is an arithmetic number, because the mean of its divisors is an integer number (18805746456).

Almost surely, 2^75221118911 is an apocalyptic number.

75221118911 is a deficient number, since it is larger than the sum of its proper divisors (1866913).

75221118911 is a wasteful number, since it uses less digits than its factorization.

75221118911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1866912.

The product of its digits is 10080, while the sum is 38.

The spelling of 75221118911 in words is "seventy-five billion, two hundred twenty-one million, one hundred eighteen thousand, nine hundred eleven".