74042144512 has 144 divisors (see below), whose sum is σ = 171952562880. Its totient is φ = 31165415424.

The previous prime is 74042144489. The next prime is 74042144549. The reversal of 74042144512 is 21544124047.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25038138 + ... + 25041094.

It is an arithmetic number, because the mean of its divisors is an integer number (1194115020).

Almost surely, 2^74042144512 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 74042144512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85976281440).

74042144512 is an abundant number, since it is smaller than the sum of its proper divisors (97910418368).

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

74042144512 is a wasteful number, since it uses less digits than its factorization.

74042144512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3226 (or 3212 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 34.

Adding to 74042144512 its reverse (21544124047), we get a palindrome (95586268559).

The spelling of 74042144512 in words is "seventy-four billion, forty-two million, one hundred forty-four thousand, five hundred twelve".