20673755934418 has 8 divisors (see below), whose sum is σ = 31014567787248. Its totient is φ = 10335566672004.

The previous prime is 20673755934397. The next prime is 20673755934431. The reversal of 20673755934418 is 81443955737602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20673755934418.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 655627896 + ... + 655659427.

It is an arithmetic number, because the mean of its divisors is an integer number (3876820973406).

It is a 1-persistent number, because it is pandigital, but 2⋅20673755934418 = 41347511868836 is not.

Almost surely, 2^{20673755934418} is an apocalyptic number.

20673755934418 is a deficient number, since it is larger than the sum of its proper divisors (10340811852830).

20673755934418 is a wasteful number, since it uses less digits than its factorization.

20673755934418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311295208.

The product of its (nonzero) digits is 152409600, while the sum is 64.

The spelling of 20673755934418 in words is "twenty trillion, six hundred seventy-three billion, seven hundred fifty-five million, nine hundred thirty-four thousand, four hundred eighteen".