74685433458647 has 16 divisors (see below), whose sum is σ = 82242896908032. Its totient is φ = 67256049001920.

The previous prime is 74685433458637. The next prime is 74685433458707.

74685433458647 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 74685433458647 - 2¹⁰ = 74685433457623 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 (74685433458617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12618443 + ... + 17566899.

It is an arithmetic number, because the mean of its divisors is an integer number (5140181056752).

Almost surely, 2^{74685433458647} is an apocalyptic number.

74685433458647 is a deficient number, since it is larger than the sum of its proper divisors (7557463449385).

74685433458647 is a wasteful number, since it uses less digits than its factorization.

74685433458647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4961398.

The product of its digits is 6502809600, while the sum is 74.

The spelling of 74685433458647 in words is "seventy-four trillion, six hundred eighty-five billion, four hundred thirty-three million, four hundred fifty-eight thousand, six hundred forty-seven".