2021445644404 has 24 divisors (see below), whose sum is σ = 3603484422720. Its totient is φ = 992052345984.

The previous prime is 2021445644377. The next prime is 2021445644419. The reversal of 2021445644404 is 4044465441202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21663274 + ... + 21756385.

It is an arithmetic number, because the mean of its divisors is an integer number (150145184280).

Almost surely, 2^{2021445644404} is an apocalyptic number.

It is an amenable number.

2021445644404 is a deficient number, since it is larger than the sum of its proper divisors (1582038778316).

2021445644404 is a wasteful number, since it uses less digits than its factorization.

2021445644404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43419879 (or 43419877 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 40.

The spelling of 2021445644404 in words is "two trillion, twenty-one billion, four hundred forty-five million, six hundred forty-four thousand, four hundred four".