44043100387421 has 4 divisors (see below), whose sum is σ = 44447165528700. Its totient is φ = 43639035246144.

The previous prime is 44043100387367. The next prime is 44043100387477. The reversal of 44043100387421 is 12478300134044.

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 32454829123396 + 11588271264025 = 5696914^2 + 3404155^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44043100387421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44043100387621) 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, 202032570476 + ... + 202032570693.

It is an arithmetic number, because the mean of its divisors is an integer number (11111791382175).

Almost surely, 2^{44043100387421} is an apocalyptic number.

It is an amenable number.

44043100387421 is a deficient number, since it is larger than the sum of its proper divisors (404065141279).

44043100387421 is a wasteful number, since it uses less digits than its factorization.

44043100387421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404065141278.

The product of its (nonzero) digits is 258048, while the sum is 41.

The spelling of 44043100387421 in words is "forty-four trillion, forty-three billion, one hundred million, three hundred eighty-seven thousand, four hundred twenty-one".