43954913616 has 80 divisors (see below), whose sum is σ = 116147637504. Its totient is φ = 14317460992.

The previous prime is 43954913591. The next prime is 43954913621. The reversal of 43954913616 is 61631945934.

It is a congruent number.

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, 1458250 + ... + 1488086.

Almost surely, 2^43954913616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43954913616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58073818752).

43954913616 is an abundant number, since it is smaller than the sum of its proper divisors (72192723888).

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

43954913616 is a wasteful number, since it uses less digits than its factorization.

43954913616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30548 (or 30542 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 51.

The spelling of 43954913616 in words is "forty-three billion, nine hundred fifty-four million, nine hundred thirteen thousand, six hundred sixteen".