74718449287 has 4 divisors (see below), whose sum is σ = 74982472360. Its totient is φ = 74454426216.

The previous prime is 74718449269. The next prime is 74718449291. The reversal of 74718449287 is 78294481747.

It is a happy number.

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 74718449287 - 2¹¹ = 74718447239 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 (74718449207) 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, 132011112 + ... + 132011677.

It is an arithmetic number, because the mean of its divisors is an integer number (18745618090).

Almost surely, 2^74718449287 is an apocalyptic number.

74718449287 is a deficient number, since it is larger than the sum of its proper divisors (264023073).

74718449287 is a wasteful number, since it uses less digits than its factorization.

74718449287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264023072.

The product of its digits is 25288704, while the sum is 61.

It can be divided in two parts, 74718449 and 287, that added together give a square (74718736 = 8644²).

The spelling of 74718449287 in words is "seventy-four billion, seven hundred eighteen million, four hundred forty-nine thousand, two hundred eighty-seven".