1944159415121 has 8 divisors (see below), whose sum is σ = 2423887063104. Its totient is φ = 1514929414320.

The previous prime is 1944159415091. The next prime is 1944159415123. The reversal of 1944159415121 is 1215149514491.

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

It is not a de Polignac number, because 1944159415121 - 2¹⁰ = 1944159414097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1944159415123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12624411710 + ... + 12624411863.

It is an arithmetic number, because the mean of its divisors is an integer number (302985882888).

Almost surely, 2^{1944159415121} is an apocalyptic number.

1944159415121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1944159415121 is a deficient number, since it is larger than the sum of its proper divisors (479727647983).

1944159415121 is a wasteful number, since it uses less digits than its factorization.

1944159415121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25248823591.

The product of its digits is 259200, while the sum is 47.

The spelling of 1944159415121 in words is "one trillion, nine hundred forty-four billion, one hundred fifty-nine million, four hundred fifteen thousand, one hundred twenty-one".