1443410421997 has 4 divisors (see below), whose sum is σ = 1457701614396. Its totient is φ = 1429119229600.

The previous prime is 1443410421989. The next prime is 1443410422009. The reversal of 1443410421997 is 7991240143441.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1229051607876 + 214358814121 = 1108626^2 + 462989^2 .

It is a cyclic number.

It is not a de Polignac number, because 1443410421997 - 2³ = 1443410421989 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 1443410421997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1443410421917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7145596048 + ... + 7145596249.

It is an arithmetic number, because the mean of its divisors is an integer number (364425403599).

Almost surely, 2^{1443410421997} is an apocalyptic number.

It is an amenable number.

1443410421997 is a deficient number, since it is larger than the sum of its proper divisors (14291192399).

1443410421997 is a wasteful number, since it uses less digits than its factorization.

1443410421997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14291192398.

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 1443410421997 in words is "one trillion, four hundred forty-three billion, four hundred ten million, four hundred twenty-one thousand, nine hundred ninety-seven".