43951445316 has 135 divisors (see below), whose sum is σ = 121461428781. Its totient is φ = 13856762016.

The previous prime is 43951445299. The next prime is 43951445359. The reversal of 43951445316 is 61354415934.

The square root of 43951445316 is 209646.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 143280900 + 43808164416 = 11970^2 + 209304^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 71698626 + ... + 71699238.

Almost surely, 2^43951445316 is an apocalyptic number.

43951445316 is the 209646-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43951445316

43951445316 is an abundant number, since it is smaller than the sum of its proper divisors (77509983465).

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

43951445316 is an equidigital number, since it uses as much as digits as its factorization.

43951445316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280 (or 637 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The spelling of 43951445316 in words is "forty-three billion, nine hundred fifty-one million, four hundred forty-five thousand, three hundred sixteen".