11722312500 has 168 divisors, whose sum is σ = 34583932320. Its totient is φ = 3090000000.

The previous prime is 11722312493. The next prime is 11722312531. The reversal of 11722312500 is 521322711.

11722312500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11722312500² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 18937191 + ... + 18937809.

It is an arithmetic number, because the mean of its divisors is an integer number (205856740).

Almost surely, 2^11722312500 is an apocalyptic number.

11722312500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11722312500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17291966160).

11722312500 is an abundant number, since it is smaller than the sum of its proper divisors (22861619820).

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

11722312500 is an equidigital number, since it uses as much as digits as its factorization.

11722312500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757 (or 730 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The spelling of 11722312500 in words is "eleven billion, seven hundred twenty-two million, three hundred twelve thousand, five hundred".