11721623303 has 16 divisors (see below), whose sum is σ = 13086971520. Its totient is φ = 10424139264.

The previous prime is 11721623293. The next prime is 11721623363. The reversal of 11721623303 is 30332612711.

It is a cyclic number.

It is not a de Polignac number, because 11721623303 - 2¹² = 11721619207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11721623363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140975 + ... + 208127.

It is an arithmetic number, because the mean of its divisors is an integer number (817935720).

Almost surely, 2^11721623303 is an apocalyptic number.

11721623303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11721623303 is a deficient number, since it is larger than the sum of its proper divisors (1365348217).

11721623303 is a wasteful number, since it uses less digits than its factorization.

11721623303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67658.

The product of its (nonzero) digits is 4536, while the sum is 29.

The spelling of 11721623303 in words is "eleven billion, seven hundred twenty-one million, six hundred twenty-three thousand, three hundred three".