18768978120 has 64 divisors (see below), whose sum is σ = 57504971520. Its totient is φ = 4898568704.

The previous prime is 18768978101. The next prime is 18768978199. The reversal of 18768978120 is 2187986781.

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, 1658277 + ... + 1669556.

It is an arithmetic number, because the mean of its divisors is an integer number (898515180).

Almost surely, 2^18768978120 is an apocalyptic number.

18768978120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18768978120 is an abundant number, since it is smaller than the sum of its proper divisors (38735993400).

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

18768978120 is a wasteful number, since it uses less digits than its factorization.

18768978120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3327894 (or 3327890 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 57.

The spelling of 18768978120 in words is "eighteen billion, seven hundred sixty-eight million, nine hundred seventy-eight thousand, one hundred twenty".