43644644634 has 32 divisors (see below), whose sum is σ = 90451753920. Its totient is φ = 14022831872.

The previous prime is 43644644623. The next prime is 43644644657.

43644644634 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108312 + ... + 314675.

It is an arithmetic number, because the mean of its divisors is an integer number (2826617310).

Almost surely, 2^43644644634 is an apocalyptic number.

43644644634 is an abundant number, since it is smaller than the sum of its proper divisors (46807109286).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43644644634 is a wasteful number, since it uses less digits than its factorization.

43644644634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423614.

The product of its digits is 7962624, while the sum is 48.

The spelling of 43644644634 in words is "forty-three billion, six hundred forty-four million, six hundred forty-four thousand, six hundred thirty-four".