40641746443 has 4 divisors (see below), whose sum is σ = 40651262008. Its totient is φ = 40632230880.

The previous prime is 40641746441. The next prime is 40641746459. The reversal of 40641746443 is 34464714604.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40641746443 - 2¹ = 40641746441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40641746443.

It is not an unprimeable number, because it can be changed into a prime (40641746441) 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, 4751373 + ... + 4759918.

It is an arithmetic number, because the mean of its divisors is an integer number (10162815502).

Almost surely, 2^40641746443 is an apocalyptic number.

40641746443 is a deficient number, since it is larger than the sum of its proper divisors (9515565).

40641746443 is an equidigital number, since it uses as much as digits as its factorization.

40641746443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9515564.

The product of its (nonzero) digits is 774144, while the sum is 43.

The spelling of 40641746443 in words is "forty billion, six hundred forty-one million, seven hundred forty-six thousand, four hundred forty-three".