74487078447 has 4 divisors (see below), whose sum is σ = 99316104600. Its totient is φ = 49658052296.

The previous prime is 74487078443. The next prime is 74487078481.

74487078447 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 not a de Polignac number, because 74487078447 - 2² = 74487078443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74487078443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12414513072 + ... + 12414513077.

It is an arithmetic number, because the mean of its divisors is an integer number (24829026150).

Almost surely, 2^74487078447 is an apocalyptic number.

74487078447 is a deficient number, since it is larger than the sum of its proper divisors (24829026153).

74487078447 is a wasteful number, since it uses less digits than its factorization.

74487078447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24829026152.

The product of its (nonzero) digits is 39337984, while the sum is 60.

The spelling of 74487078447 in words is "seventy-four billion, four hundred eighty-seven million, seventy-eight thousand, four hundred forty-seven".