1443631161421 has 8 divisors (see below), whose sum is σ = 1454244922944. Its totient is φ = 1433018506080.

The previous prime is 1443631161367. The next prime is 1443631161439. The reversal of 1443631161421 is 1241611363441.

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 1443631161421 - 2¹⁷ = 1443631030349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1443631161521) 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, 2440936 + ... + 2974126.

It is an arithmetic number, because the mean of its divisors is an integer number (181780615368).

Almost surely, 2^{1443631161421} is an apocalyptic number.

It is an amenable number.

1443631161421 is a deficient number, since it is larger than the sum of its proper divisors (10613761523).

1443631161421 is a wasteful number, since it uses less digits than its factorization.

1443631161421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553091.

The product of its digits is 41472, while the sum is 37.

The spelling of 1443631161421 in words is "one trillion, four hundred forty-three billion, six hundred thirty-one million, one hundred sixty-one thousand, four hundred twenty-one".