41643321239729 has 4 divisors (see below), whose sum is σ = 45429077716080. Its totient is φ = 37857564763380.

The previous prime is 41643321239713. The next prime is 41643321239831. The reversal of 41643321239729 is 92793212334614.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 41643321239729 - 2⁴ = 41643321239713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (41643321230729) 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, 1892878238159 + ... + 1892878238180.

It is an arithmetic number, because the mean of its divisors is an integer number (11357269429020).

Almost surely, 2^{41643321239729} is an apocalyptic number.

It is an amenable number.

41643321239729 is a deficient number, since it is larger than the sum of its proper divisors (3785756476351).

41643321239729 is a wasteful number, since it uses less digits than its factorization.

41643321239729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3785756476350.

The product of its digits is 11757312, while the sum is 56.

The spelling of 41643321239729 in words is "forty-one trillion, six hundred forty-three billion, three hundred twenty-one million, two hundred thirty-nine thousand, seven hundred twenty-nine".