43641105457 has 4 divisors (see below), whose sum is σ = 43740516160. Its totient is φ = 43541694756.

The previous prime is 43641105421. The next prime is 43641105479. The reversal of 43641105457 is 75450114634.

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 43641105457 - 2¹⁹ = 43640581169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43641105407) 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, 49704693 + ... + 49705570.

It is an arithmetic number, because the mean of its divisors is an integer number (10935129040).

Almost surely, 2^43641105457 is an apocalyptic number.

It is an amenable number.

43641105457 is a deficient number, since it is larger than the sum of its proper divisors (99410703).

43641105457 is an equidigital number, since it uses as much as digits as its factorization.

43641105457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99410702.

The product of its (nonzero) digits is 201600, while the sum is 40.

The spelling of 43641105457 in words is "forty-three billion, six hundred forty-one million, one hundred five thousand, four hundred fifty-seven".