43994803361 has 4 divisors (see below), whose sum is σ = 43995969792. Its totient is φ = 43993636932.

The previous prime is 43994803309. The next prime is 43994803399. The reversal of 43994803361 is 16330849934.

43994803361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43994803361 - 2²² = 43990609057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43994803261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 524681 + ... + 602726.

It is an arithmetic number, because the mean of its divisors is an integer number (10998992448).

Almost surely, 2^43994803361 is an apocalyptic number.

It is an amenable number.

43994803361 is a deficient number, since it is larger than the sum of its proper divisors (1166431).

43994803361 is a wasteful number, since it uses less digits than its factorization.

43994803361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166430.

The product of its (nonzero) digits is 1679616, while the sum is 50.

The spelling of 43994803361 in words is "forty-three billion, nine hundred ninety-four million, eight hundred three thousand, three hundred sixty-one".