44478989568 has 180 divisors, whose sum is σ = 142831341268. Its totient is φ = 13685760000.

The previous prime is 44478989551. The next prime is 44478989579. The reversal of 44478989568 is 86598987444.

44478989568 is a `hidden beast` number, since 4 + 4 + 478 + 9 + 8 + 95 + 68 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4817470464 + 39661519104 = 69408^2 + 199152^2 .

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 44478989496 and 44478989505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 187068 + ... + 352068.

Almost surely, 2^44478989568 is an apocalyptic number.

44478989568 is a gapful number since it is divisible by the number (48) 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 44478989568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71415670634).

44478989568 is an abundant number, since it is smaller than the sum of its proper divisors (98352351700).

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

44478989568 is a wasteful number, since it uses less digits than its factorization.

44478989568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165042 (or 165019 counting only the distinct ones).

The product of its digits is 557383680, while the sum is 72.

The spelling of 44478989568 in words is "forty-four billion, four hundred seventy-eight million, nine hundred eighty-nine thousand, five hundred sixty-eight".