80444440044 has 18 divisors (see below), whose sum is σ = 203345667980. Its totient is φ = 26814813336.

The previous prime is 80444440039. The next prime is 80444440067. The reversal of 80444440044 is 44004444408.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2234567779 = 80444440044 / (8 + 0 + 4 + 4 + 4 + 4 + 4 + 0 + 0 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 80444439990 and 80444440008.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1117283854 + ... + 1117283925.

Almost surely, 2^80444440044 is an apocalyptic number.

It is an amenable number.

80444440044 is an abundant number, since it is smaller than the sum of its proper divisors (122901227936).

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

80444440044 is a wasteful number, since it uses less digits than its factorization.

80444440044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234567789 (or 2234567784 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 36.

The spelling of 80444440044 in words is "eighty billion, four hundred forty-four million, four hundred forty thousand, forty-four".