44394577920 has 1536 divisors, whose sum is σ = 211993666560. Its totient is φ = 8304721920.

The previous prime is 44394577859. The next prime is 44394577979. The reversal of 44394577920 is 2977549344.

44394577920 is a `hidden beast` number, since 4 + 43 + 9 + 4 + 577 + 9 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (1536).

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, 1930199029 + ... + 1930199051.

It is an arithmetic number, because the mean of its divisors is an integer number (138016710).

Almost surely, 2^44394577920 is an apocalyptic number.

44394577920 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 44394577920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105996833280).

44394577920 is an abundant number, since it is smaller than the sum of its proper divisors (167599088640).

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

44394577920 is a wasteful number, since it uses less digits than its factorization.

44394577920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 54.

The spelling of 44394577920 in words is "forty-four billion, three hundred ninety-four million, five hundred seventy-seven thousand, nine hundred twenty".