44168171778 has 32 divisors (see below), whose sum is σ = 99393926400. Its totient is φ = 14536358928.

The previous prime is 44168171771. The next prime is 44168171791. The reversal of 44168171778 is 87717186144.

44168171778 is a `hidden beast` number, since 441 + 68 + 1 + 71 + 7 + 78 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (44168171771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5172501 + ... + 5181032.

It is an arithmetic number, because the mean of its divisors is an integer number (3106060200).

Almost surely, 2^44168171778 is an apocalyptic number.

44168171778 is an abundant number, since it is smaller than the sum of its proper divisors (55225754622).

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

44168171778 is a wasteful number, since it uses less digits than its factorization.

44168171778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10353623 (or 10353617 counting only the distinct ones).

The product of its digits is 2107392, while the sum is 54.

The spelling of 44168171778 in words is "forty-four billion, one hundred sixty-eight million, one hundred seventy-one thousand, seven hundred seventy-eight".