121445673600 has 192 divisors, whose sum is σ = 409769398080. Its totient is φ = 31595520000.

The previous prime is 121445673581. The next prime is 121445673631. The reversal of 121445673600 is 6376544121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (192).

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 23 ways as a sum of consecutive naturals, for example, 239325 + ... + 547875.

It is an arithmetic number, because the mean of its divisors is an integer number (2134215615).

Almost surely, 2^121445673600 is an apocalyptic number.

121445673600 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 121445673600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (204884699040).

121445673600 is an abundant number, since it is smaller than the sum of its proper divisors (288323724480).

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

121445673600 is a wasteful number, since it uses less digits than its factorization.

121445673600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308619 (or 308602 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 121445673600 in words is "one hundred twenty-one billion, four hundred forty-five million, six hundred seventy-three thousand, six hundred".