12172033644450 has 48 divisors (see below), whose sum is σ = 30187216394496. Its totient is φ = 3245814030400.

The previous prime is 12172033644443. The next prime is 12172033644451. The reversal of 12172033644450 is 5444633027121.

12172033644450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12172033644451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7450660 + ... + 8936240.

It is an arithmetic number, because the mean of its divisors is an integer number (628900341552).

Almost surely, 2^{12172033644450} is an apocalyptic number.

12172033644450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12172033644450 is an abundant number, since it is smaller than the sum of its proper divisors (18015182750046).

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

12172033644450 is a wasteful number, since it uses less digits than its factorization.

12172033644450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540219 (or 1540214 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 42.

The spelling of 12172033644450 in words is "twelve trillion, one hundred seventy-two billion, thirty-three million, six hundred forty-four thousand, four hundred fifty".