44444455555491 has 12 divisors (see below), whose sum is σ = 64197606949632. Its totient is φ = 29629609328016.

The previous prime is 44444455555457. The next prime is 44444455555501. The reversal of 44444455555491 is 19455555444444.

It is a happy number.

44444455555491 is a `hidden beast` number, since 4 + 4 + 4 + 4 + 4 + 45 + 55 + 55 + 491 = 666.

It is not a de Polignac number, because 44444455555491 - 2⁹ = 44444455554979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (44444455555691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13667230 + ... + 16603676.

It is an arithmetic number, because the mean of its divisors is an integer number (5349800579136).

Almost surely, 2^{44444455555491} is an apocalyptic number.

44444455555491 is a deficient number, since it is larger than the sum of its proper divisors (19753151394141).

44444455555491 is a wasteful number, since it uses less digits than its factorization.

44444455555491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4618170 (or 4618167 counting only the distinct ones).

The product of its digits is 460800000, while the sum is 63.

The spelling of 44444455555491 in words is "forty-four trillion, four hundred forty-four billion, four hundred fifty-five million, five hundred fifty-five thousand, four hundred ninety-one".