74479466497447 has 4 divisors (see below), whose sum is σ = 81250327088136. Its totient is φ = 67708605906760.

The previous prime is 74479466497363. The next prime is 74479466497451.

74479466497447 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74479466497447 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 (74479566497447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3385430295328 + ... + 3385430295349.

It is an arithmetic number, because the mean of its divisors is an integer number (20312581772034).

Almost surely, 2^{74479466497447} is an apocalyptic number.

74479466497447 is a deficient number, since it is larger than the sum of its proper divisors (6770860590689).

74479466497447 is a wasteful number, since it uses less digits than its factorization.

74479466497447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6770860590688.

The product of its digits is 28677390336, while the sum is 82.

The spelling of 74479466497447 in words is "seventy-four trillion, four hundred seventy-nine billion, four hundred sixty-six million, four hundred ninety-seven thousand, four hundred forty-seven".