44478989567 has 4 divisors (see below), whose sum is σ = 47095400736. Its totient is φ = 41862578400.

The previous prime is 44478989551. The next prime is 44478989579. The reversal of 44478989567 is 76598987444.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 44478989567 - 2⁴ = 44478989551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 44478989567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44478989587) 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, 1308205559 + ... + 1308205592.

It is an arithmetic number, because the mean of its divisors is an integer number (11773850184).

Almost surely, 2^44478989567 is an apocalyptic number.

44478989567 is a deficient number, since it is larger than the sum of its proper divisors (2616411169).

44478989567 is a wasteful number, since it uses less digits than its factorization.

44478989567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2616411168.

The product of its digits is 487710720, while the sum is 71.

The spelling of 44478989567 in words is "forty-four billion, four hundred seventy-eight million, nine hundred eighty-nine thousand, five hundred sixty-seven".