44455855444 has 144 divisors (see below), whose sum is σ = 107400160000. Its totient is φ = 15987343680.

The previous prime is 44455855421. The next prime is 44455855447.

44455855444 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a junction number, because it is equal to n+sod(n) for n = 44455855391 and 44455855400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44455855447) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2147857 + ... + 2168455.

Almost surely, 2^44455855444 is an apocalyptic number.

44455855444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44455855444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53700080000).

44455855444 is an abundant number, since it is smaller than the sum of its proper divisors (62944304556).

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

44455855444 is a wasteful number, since it uses less digits than its factorization.

44455855444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20659 (or 20632 counting only the distinct ones).

The product of its digits is 20480000, while the sum is 52.

The spelling of 44455855444 in words is "forty-four billion, four hundred fifty-five million, eight hundred fifty-five thousand, four hundred forty-four".