121643144053199 has 8 divisors (see below), whose sum is σ = 122260721860560. Its totient is φ = 121026876062400.

The previous prime is 121643144053159. The next prime is 121643144053219. The reversal of 121643144053199 is 991350441346121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121643144053199 - 2¹⁶ = 121643143987663 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121643144053199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121643144053129) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 327267929 + ... + 327639410.

It is an arithmetic number, because the mean of its divisors is an integer number (15282590232570).

Almost surely, 2^{121643144053199} is an apocalyptic number.

121643144053199 is a deficient number, since it is larger than the sum of its proper divisors (617577807361).

121643144053199 is an equidigital number, since it uses as much as digits as its factorization.

121643144053199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654908281.

The product of its (nonzero) digits is 2799360, while the sum is 53.

The spelling of 121643144053199 in words is "one hundred twenty-one trillion, six hundred forty-three billion, one hundred forty-four million, fifty-three thousand, one hundred ninety-nine".