18999316723472 has 40 divisors (see below), whose sum is σ = 37168879968000. Its totient is φ = 9407413049472.

The previous prime is 18999316723469. The next prime is 18999316723477. The reversal of 18999316723472 is 27432761399981.

It is a junction number, because it is equal to n+sod(n) for n = 18999316723396 and 18999316723405.

It is not an unprimeable number, because it can be changed into a prime (18999316723477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2614154 + ... + 6695702.

It is an arithmetic number, because the mean of its divisors is an integer number (929221999200).

Almost surely, 2^{18999316723472} is an apocalyptic number.

It is an amenable number.

18999316723472 is a deficient number, since it is larger than the sum of its proper divisors (18169563244528).

18999316723472 is a wasteful number, since it uses less digits than its factorization.

18999316723472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4084383 (or 4084377 counting only the distinct ones).

The product of its digits is 246903552, while the sum is 71.

The spelling of 18999316723472 in words is "eighteen trillion, nine hundred ninety-nine billion, three hundred sixteen million, seven hundred twenty-three thousand, four hundred seventy-two".