44640142320 has 160 divisors (see below), whose sum is σ = 141417948672. Its totient is φ = 11645899776.

The previous prime is 44640142301. The next prime is 44640142331. The reversal of 44640142320 is 2324104644.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2040882 + ... + 2062638.

Almost surely, 2^44640142320 is an apocalyptic number.

44640142320 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 44640142320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70708974336).

44640142320 is an abundant number, since it is smaller than the sum of its proper divisors (96777806352).

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

44640142320 is a wasteful number, since it uses less digits than its factorization.

44640142320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21959 (or 21953 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 44640142320 its reverse (2324104644), we get a palindrome (46964246964).

The spelling of 44640142320 in words is "forty-four billion, six hundred forty million, one hundred forty-two thousand, three hundred twenty".