74521080325440 has 1344 divisors, whose sum is σ = 315564009366528. Its totient is φ = 15754140057600.

The previous prime is 74521080325339. The next prime is 74521080325469. The reversal of 74521080325440 is 4452308012547.

74521080325440 is a `hidden beast` number, since 7 + 4 + 5 + 21 + 0 + 80 + 3 + 2 + 544 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a super-2 number, since 2×74521080325440² (a number of 29 digits) contains 22 as substring.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 7713594210 + ... + 7713603870.

Almost surely, 2^{74521080325440} is an apocalyptic number.

74521080325440 is a gapful number since it is divisible by the number (70) 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 74521080325440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157782004683264).

74521080325440 is an abundant number, since it is smaller than the sum of its proper divisors (241042929041088).

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

74521080325440 is a wasteful number, since it uses less digits than its factorization.

74521080325440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10096 (or 10083 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 45.

Adding to 74521080325440 its reverse (4452308012547), we get a palindrome (78973388337987).

The spelling of 74521080325440 in words is "seventy-four trillion, five hundred twenty-one billion, eighty million, three hundred twenty-five thousand, four hundred forty".