43444312134021 has 24 divisors (see below), whose sum is σ = 62855963992640. Its totient is φ = 28915312447296.

The previous prime is 43444312134001. The next prime is 43444312134031. The reversal of 43444312134021 is 12043121344434.

43444312134021 is a `hidden beast` number, since 4 + 3 + 4 + 4 + 4 + 31 + 213 + 402 + 1 = 666.

It is not a de Polignac number, because 43444312134021 - 2²⁶ = 43444245025157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43444312134001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67323120 + ... + 67965366.

Almost surely, 2^{43444312134021} is an apocalyptic number.

It is an amenable number.

43444312134021 is a deficient number, since it is larger than the sum of its proper divisors (19411651858619).

43444312134021 is a wasteful number, since it uses less digits than its factorization.

43444312134021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654585 (or 654582 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 36.

Adding to 43444312134021 its reverse (12043121344434), we get a palindrome (55487433478455).

The spelling of 43444312134021 in words is "forty-three trillion, four hundred forty-four billion, three hundred twelve million, one hundred thirty-four thousand, twenty-one".