74256717227728 has 40 divisors (see below), whose sum is σ = 169729639385600. Its totient is φ = 30797716821120.

The previous prime is 74256717227713. The next prime is 74256717227731. The reversal of 74256717227728 is 82772271765247.

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 7 ways as a sum of consecutive naturals, for example, 10693648203 + ... + 10693655146.

It is an arithmetic number, because the mean of its divisors is an integer number (4243240984640).

Almost surely, 2^{74256717227728} is an apocalyptic number.

It is an amenable number.

74256717227728 is an abundant number, since it is smaller than the sum of its proper divisors (95472922157872).

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

74256717227728 is a wasteful number, since it uses less digits than its factorization.

74256717227728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21387303395 (or 21387303389 counting only the distinct ones).

The product of its digits is 258155520, while the sum is 67.

The spelling of 74256717227728 in words is "seventy-four trillion, two hundred fifty-six billion, seven hundred seventeen million, two hundred twenty-seven thousand, seven hundred twenty-eight".