18383646005476 has 12 divisors (see below), whose sum is σ = 32171418539260. Its totient is φ = 9191812137120.

The previous prime is 18383646005471. The next prime is 18383646005477. The reversal of 18383646005476 is 67450064638381.

It can be written as a sum of positive squares in 2 ways, for example, as 13873017622500 + 4510628382976 = 3724650^2 + 2123824^2 .

It is a hoax number, since the sum of its digits (61) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18383646005471) 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, 2000446 + ... + 6385066.

Almost surely, 2^{18383646005476} is an apocalyptic number.

It is an amenable number.

18383646005476 is a deficient number, since it is larger than the sum of its proper divisors (13787772533784).

18383646005476 is a wasteful number, since it uses less digits than its factorization.

18383646005476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5432814 (or 5432812 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 61.

The spelling of 18383646005476 in words is "eighteen trillion, three hundred eighty-three billion, six hundred forty-six million, five thousand, four hundred seventy-six".