74894919840 has 960 divisors, whose sum is σ = 306129922560. Its totient is φ = 17079828480.

The previous prime is 74894919833. The next prime is 74894919899. The reversal of 74894919840 is 4891949847.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 226268475 + ... + 226268805.

It is an arithmetic number, because the mean of its divisors is an integer number (318885336).

Almost surely, 2^74894919840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74894919840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153064961280).

74894919840 is an abundant number, since it is smaller than the sum of its proper divisors (231235002720).

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

74894919840 is a wasteful number, since it uses less digits than its factorization.

74894919840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 63.

The spelling of 74894919840 in words is "seventy-four billion, eight hundred ninety-four million, nine hundred nineteen thousand, eight hundred forty".