74681334820 has 24 divisors (see below), whose sum is σ = 157413828600. Its totient is φ = 29761481472.

The previous prime is 74681334803. The next prime is 74681334821. The reversal of 74681334820 is 2843318647.

It can be written as a sum of positive squares in 4 ways, for example, as 4032758016 + 70648576804 = 63504^2 + 265798^2 .

It is not an unprimeable number, because it can be changed into a prime (74681334821) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6935265 + ... + 6946024.

It is an arithmetic number, because the mean of its divisors is an integer number (6558909525).

Almost surely, 2^74681334820 is an apocalyptic number.

It is an amenable number.

74681334820 is an abundant number, since it is smaller than the sum of its proper divisors (82732493780).

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

74681334820 is a wasteful number, since it uses less digits than its factorization.

74681334820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13881567 (or 13881565 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 46.

The spelling of 74681334820 in words is "seventy-four billion, six hundred eighty-one million, three hundred thirty-four thousand, eight hundred twenty".