1001944944433 has 16 divisors (see below), whose sum is σ = 1054777248000. Its totient is φ = 949913395200.

The previous prime is 1001944944431. The next prime is 1001944944523. The reversal of 1001944944433 is 3344494491001.

It is a happy number.

It is not a de Polignac number, because 1001944944433 - 2¹ = 1001944944431 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001944944431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1238113 + ... + 1880641.

It is an arithmetic number, because the mean of its divisors is an integer number (65923578000).

Almost surely, 2^{1001944944433} is an apocalyptic number.

It is an amenable number.

1001944944433 is a deficient number, since it is larger than the sum of its proper divisors (52832303567).

1001944944433 is a wasteful number, since it uses less digits than its factorization.

1001944944433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643152.

The product of its (nonzero) digits is 746496, while the sum is 46.

The spelling of 1001944944433 in words is "one trillion, one billion, nine hundred forty-four million, nine hundred forty-four thousand, four hundred thirty-three".