445981021942 has 8 divisors (see below), whose sum is σ = 674078186232. Its totient is φ = 221288293200.

The previous prime is 445981021909. The next prime is 445981021951. The reversal of 445981021942 is 249120189544.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 851108559 + ... + 851109082.

It is an arithmetic number, because the mean of its divisors is an integer number (84259773279).

Almost surely, 2^445981021942 is an apocalyptic number.

445981021942 is a deficient number, since it is larger than the sum of its proper divisors (228097164290).

445981021942 is a wasteful number, since it uses less digits than its factorization.

445981021942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1702217774.

The product of its (nonzero) digits is 829440, while the sum is 49.

The spelling of 445981021942 in words is "four hundred forty-five billion, nine hundred eighty-one million, twenty-one thousand, nine hundred forty-two".