18978984462132 has 288 divisors, whose sum is σ = 52337817342720. Its totient is φ = 5782791168000.

The previous prime is 18978984462127. The next prime is 18978984462133. The reversal of 18978984462132 is 23126448987981.

It is a happy number.

18978984462132 is a `hidden beast` number, since 1 + 8 + 9 + 7 + 89 + 84 + 462 + 1 + 3 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18978984462133) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 562807032 + ... + 562840752.

It is an arithmetic number, because the mean of its divisors is an integer number (181728532440).

Almost surely, 2^{18978984462132} is an apocalyptic number.

18978984462132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18978984462132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26168908671360).

18978984462132 is an abundant number, since it is smaller than the sum of its proper divisors (33358832880588).

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

18978984462132 is a wasteful number, since it uses less digits than its factorization.

18978984462132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34135 (or 34130 counting only the distinct ones).

The product of its digits is 334430208, while the sum is 72.

The spelling of 18978984462132 in words is "eighteen trillion, nine hundred seventy-eight billion, nine hundred eighty-four million, four hundred sixty-two thousand, one hundred thirty-two".