44491115778 has 16 divisors (see below), whose sum is σ = 89661486816. Its totient is φ = 14717162720.

The previous prime is 44491115759. The next prime is 44491115783. The reversal of 44491115778 is 87751119444.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 44491115778.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28301451 + ... + 28303022.

It is an arithmetic number, because the mean of its divisors is an integer number (5603842926).

Almost surely, 2^44491115778 is an apocalyptic number.

44491115778 is an abundant number, since it is smaller than the sum of its proper divisors (45170371038).

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

44491115778 is a wasteful number, since it uses less digits than its factorization.

44491115778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56604609.

The product of its digits is 1128960, while the sum is 51.

The spelling of 44491115778 in words is "forty-four billion, four hundred ninety-one million, one hundred fifteen thousand, seven hundred seventy-eight".