74635321718 has 4 divisors (see below), whose sum is σ = 111952982580. Its totient is φ = 37317660858.

The previous prime is 74635321699. The next prime is 74635321723. The reversal of 74635321718 is 81712353647.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18658830428 + ... + 18658830431.

It is an arithmetic number, because the mean of its divisors is an integer number (27988245645).

Almost surely, 2^74635321718 is an apocalyptic number.

74635321718 is a deficient number, since it is larger than the sum of its proper divisors (37317660862).

74635321718 is a wasteful number, since it uses less digits than its factorization.

74635321718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37317660861.

The product of its digits is 846720, while the sum is 47.

The spelling of 74635321718 in words is "seventy-four billion, six hundred thirty-five million, three hundred twenty-one thousand, seven hundred eighteen".