43686668634 has 96 divisors (see below), whose sum is σ = 104132039616. Its totient is φ = 12176398080.

The previous prime is 43686668611. The next prime is 43686668681.

43686668634 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13411534 + ... + 13414790.

It is an arithmetic number, because the mean of its divisors is an integer number (1084708746).

Almost surely, 2^43686668634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43686668634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52066019808).

43686668634 is an abundant number, since it is smaller than the sum of its proper divisors (60445370982).

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

43686668634 is a wasteful number, since it uses less digits than its factorization.

43686668634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4380 (or 4373 counting only the distinct ones).

The product of its digits is 71663616, while the sum is 60.

The spelling of 43686668634 in words is "forty-three billion, six hundred eighty-six million, six hundred sixty-eight thousand, six hundred thirty-four".