18966620339460 has 480 divisors, whose sum is σ = 63366680982528. Its totient is φ = 4732535808000.

The previous prime is 18966620339423. The next prime is 18966620339503. The reversal of 18966620339460 is 6493302666981.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 4265034957 + ... + 4265039403.

Almost surely, 2^{18966620339460} is an apocalyptic number.

18966620339460 is a gapful number since it is divisible by the number (10) 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 18966620339460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31683340491264).

18966620339460 is an abundant number, since it is smaller than the sum of its proper divisors (44400060643068).

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

18966620339460 is a wasteful number, since it uses less digits than its factorization.

18966620339460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5353 (or 5342 counting only the distinct ones).

The product of its (nonzero) digits is 60466176, while the sum is 63.

The spelling of 18966620339460 in words is "eighteen trillion, nine hundred sixty-six billion, six hundred twenty million, three hundred thirty-nine thousand, four hundred sixty".