74551189440 has 896 divisors, whose sum is σ = 303076343808. Its totient is φ = 15109079040.

The previous prime is 74551189429. The next prime is 74551189469. The reversal of 74551189440 is 4498115547.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 74551189440.

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 127 ways as a sum of consecutive naturals, for example, 275096505 + ... + 275096775.

It is an arithmetic number, because the mean of its divisors is an integer number (338254848).

Almost surely, 2^74551189440 is an apocalyptic number.

74551189440 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 74551189440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151538171904).

74551189440 is an abundant number, since it is smaller than the sum of its proper divisors (228525154368).

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

74551189440 is a wasteful number, since it uses less digits than its factorization.

74551189440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425 (or 415 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 48.

The spelling of 74551189440 in words is "seventy-four billion, five hundred fifty-one million, one hundred eighty-nine thousand, four hundred forty".