74193996685 has 16 divisors (see below), whose sum is σ = 90173779200. Its totient is φ = 58594775616.

The previous prime is 74193996677. The next prime is 74193996703. The reversal of 74193996685 is 58669939147.

It is a cyclic number.

It is not a de Polignac number, because 74193996685 - 2³ = 74193996677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74193996685.

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, 3793702 + ... + 3813208.

It is an arithmetic number, because the mean of its divisors is an integer number (5635861200).

Almost surely, 2^74193996685 is an apocalyptic number.

It is an amenable number.

74193996685 is a deficient number, since it is larger than the sum of its proper divisors (15979782515).

74193996685 is a wasteful number, since it uses less digits than its factorization.

74193996685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29220.

The product of its digits is 88179840, while the sum is 67.

The spelling of 74193996685 in words is "seventy-four billion, one hundred ninety-three million, nine hundred ninety-six thousand, six hundred eighty-five".