43661616634 has 32 divisors (see below), whose sum is σ = 69403443840. Its totient is φ = 20559000000.

The previous prime is 43661616587. The next prime is 43661616683.

43661616634 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 805384 + ... + 857884.

It is an arithmetic number, because the mean of its divisors is an integer number (2168857620).

Almost surely, 2^43661616634 is an apocalyptic number.

43661616634 is a deficient number, since it is larger than the sum of its proper divisors (25741827206).

43661616634 is a wasteful number, since it uses less digits than its factorization.

43661616634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52806.

The product of its digits is 1119744, while the sum is 46.

The spelling of 43661616634 in words is "forty-three billion, six hundred sixty-one million, six hundred sixteen thousand, six hundred thirty-four".