11721340700 has 18 divisors (see below), whose sum is σ = 25435309536. Its totient is φ = 4688536240.

The previous prime is 11721340691. The next prime is 11721340751. The reversal of 11721340700 is 704312711.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11721340700.

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 in 5 ways as a sum of consecutive naturals, for example, 58606604 + ... + 58606803.

It is an arithmetic number, because the mean of its divisors is an integer number (1413072752).

Almost surely, 2^11721340700 is an apocalyptic number.

11721340700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11721340700 is an abundant number, since it is smaller than the sum of its proper divisors (13713968836).

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

11721340700 is a wasteful number, since it uses less digits than its factorization.

11721340700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117213421 (or 117213414 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 26.

The spelling of 11721340700 in words is "eleven billion, seven hundred twenty-one million, three hundred forty thousand, seven hundred".