74685458647 has 12 divisors (see below), whose sum is σ = 81541208520. Its totient is φ = 68314820112.

The previous prime is 74685458623. The next prime is 74685458681.

74685458647 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-74685458647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74685458047) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3556513 + ... + 3577450.

It is an arithmetic number, because the mean of its divisors is an integer number (6795100710).

Almost surely, 2^74685458647 is an apocalyptic number.

74685458647 is a deficient number, since it is larger than the sum of its proper divisors (6855749873).

74685458647 is a wasteful number, since it uses less digits than its factorization.

74685458647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7134030 (or 7134011 counting only the distinct ones).

The product of its digits is 180633600, while the sum is 64.

The spelling of 74685458647 in words is "seventy-four billion, six hundred eighty-five million, four hundred fifty-eight thousand, six hundred forty-seven".