18996573220576 has 48 divisors (see below), whose sum is σ = 44600650182144. Its totient is φ = 7787415106944.

The previous prime is 18996573220549. The next prime is 18996573220577. The reversal of 18996573220576 is 67502237569981.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18996573220577) 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, 1843606380 + ... + 1843616683.

It is an arithmetic number, because the mean of its divisors is an integer number (929180212128).

Almost surely, 2^{18996573220576} is an apocalyptic number.

18996573220576 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18996573220576 is an abundant number, since it is smaller than the sum of its proper divisors (25604076961568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18996573220576 is a wasteful number, since it uses less digits than its factorization.

18996573220576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3687223103 (or 3687223095 counting only the distinct ones).

The product of its (nonzero) digits is 342921600, while the sum is 70.

The spelling of 18996573220576 in words is "eighteen trillion, nine hundred ninety-six billion, five hundred seventy-three million, two hundred twenty thousand, five hundred seventy-six".