72854437418 has 32 divisors (see below), whose sum is σ = 128786934528. Its totient is φ = 30260016000.

The previous prime is 72854437367. The next prime is 72854437511. The reversal of 72854437418 is 81473445827.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72854437418.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 333605 + ... + 506952.

It is an arithmetic number, because the mean of its divisors is an integer number (4024591704).

Almost surely, 2^72854437418 is an apocalyptic number.

72854437418 is a deficient number, since it is larger than the sum of its proper divisors (55932497110).

72854437418 is a wasteful number, since it uses less digits than its factorization.

72854437418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840758.

The product of its digits is 6021120, while the sum is 53.

The spelling of 72854437418 in words is "seventy-two billion, eight hundred fifty-four million, four hundred thirty-seven thousand, four hundred eighteen".