44993387520 has 880 divisors, whose sum is σ = 173341270080. Its totient is φ = 11133517824.

The previous prime is 44993387503. The next prime is 44993387521. The reversal of 44993387520 is 2578339944.

44993387520 is a `hidden beast` number, since 4 + 4 + 9 + 9 + 33 + 87 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44993387521) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 505543636 + ... + 505543724.

It is an arithmetic number, because the mean of its divisors is an integer number (196978716).

Almost surely, 2^44993387520 is an apocalyptic number.

44993387520 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 44993387520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86670635040).

44993387520 is an abundant number, since it is smaller than the sum of its proper divisors (128347882560).

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

44993387520 is a wasteful number, since it uses less digits than its factorization.

44993387520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 44993387520 in words is "forty-four billion, nine hundred ninety-three million, three hundred eighty-seven thousand, five hundred twenty".