11321471265918 has 64 divisors (see below), whose sum is σ = 24891437894400. Its totient is φ = 3404356716800.

The previous prime is 11321471265887. The next prime is 11321471265919. The reversal of 11321471265918 is 81956217412311.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321471265919) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 210217858 + ... + 210271706.

It is an arithmetic number, because the mean of its divisors is an integer number (388928717100).

Almost surely, 2^{11321471265918} is an apocalyptic number.

11321471265918 is an abundant number, since it is smaller than the sum of its proper divisors (13569966628482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11321471265918 is a wasteful number, since it uses less digits than its factorization.

11321471265918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78313.

The product of its digits is 725760, while the sum is 51.

The spelling of 11321471265918 in words is "eleven trillion, three hundred twenty-one billion, four hundred seventy-one million, two hundred sixty-five thousand, nine hundred eighteen".