74738215992 has 64 divisors (see below), whose sum is σ = 204204528000. Its totient is φ = 22606496640.

The previous prime is 74738215967. The next prime is 74738216017. The reversal of 74738215992 is 29951283747.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (74738215967) and next prime (74738216017).

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 15 ways as a sum of consecutive naturals, for example, 114367 + ... + 403182.

It is an arithmetic number, because the mean of its divisors is an integer number (3190695750).

Almost surely, 2^74738215992 is an apocalyptic number.

It is an amenable number.

74738215992 is an abundant number, since it is smaller than the sum of its proper divisors (129466312008).

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

74738215992 is a wasteful number, since it uses less digits than its factorization.

74738215992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518116 (or 518112 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 57.

The spelling of 74738215992 in words is "seventy-four billion, seven hundred thirty-eight million, two hundred fifteen thousand, nine hundred ninety-two".