74905394512 has 80 divisors (see below), whose sum is σ = 159001823232. Its totient is φ = 33977664000.

The previous prime is 74905394483. The next prime is 74905394527. The reversal of 74905394512 is 21549350947.

It is a super-3 number, since 3×74905394512³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2813262 + ... + 2839762.

Almost surely, 2^74905394512 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 74905394512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79500911616).

74905394512 is an abundant number, since it is smaller than the sum of its proper divisors (84096428720).

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

74905394512 is a wasteful number, since it uses less digits than its factorization.

74905394512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26756 (or 26750 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 49.

The spelling of 74905394512 in words is "seventy-four billion, nine hundred five million, three hundred ninety-four thousand, five hundred twelve".