44442639360 has 792 divisors, whose sum is σ = 186023663280. Its totient is φ = 10158317568.

The previous prime is 44442639349. The next prime is 44442639383. The reversal of 44442639360 is 6393624444.

It is a happy number.

44442639360 is a `hidden beast` number, since 4 + 4 + 4 + 4 + 2 + 639 + 3 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 6348948477 + ... + 6348948483.

Almost surely, 2^44442639360 is an apocalyptic number.

44442639360 is a gapful number since it is divisible by the number (40) 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 44442639360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93011831640).

44442639360 is an abundant number, since it is smaller than the sum of its proper divisors (141581023920).

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

44442639360 is an frugal number, since it uses more digits than its factorization.

44442639360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 45.

The spelling of 44442639360 in words is "forty-four billion, four hundred forty-two million, six hundred thirty-nine thousand, three hundred sixty".