44845489920 has 864 divisors, whose sum is σ = 186025061376. Its totient is φ = 9100492800.

The previous prime is 44845489903. The next prime is 44845489943. The reversal of 44845489920 is 2998454844.

It is a happy number.

It is a super-2 number, since 2×44845489920² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 97278490 + ... + 97278950.

It is an arithmetic number, because the mean of its divisors is an integer number (215306784).

Almost surely, 2^44845489920 is an apocalyptic number.

44845489920 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 44845489920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93012530688).

44845489920 is an abundant number, since it is smaller than the sum of its proper divisors (141179571456).

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

44845489920 is a wasteful number, since it uses less digits than its factorization.

44845489920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557 (or 536 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 57.

The spelling of 44845489920 in words is "forty-four billion, eight hundred forty-five million, four hundred eighty-nine thousand, nine hundred twenty".