18963078199728 has 320 divisors, whose sum is σ = 53766623715840. Its totient is φ = 5758445841408.

The previous prime is 18963078199649. The next prime is 18963078199733. The reversal of 18963078199728 is 82799187036981.

It is a Harshad number since it is a multiple of its sum of digits (78).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3125607351 + ... + 3125613417.

It is an arithmetic number, because the mean of its divisors is an integer number (168020699112).

Almost surely, 2^{18963078199728} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18963078199728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26883311857920).

18963078199728 is an abundant number, since it is smaller than the sum of its proper divisors (34803545516112).

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

18963078199728 is a wasteful number, since it uses less digits than its factorization.

18963078199728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6501 (or 6469 counting only the distinct ones).

The product of its (nonzero) digits is 658409472, while the sum is 78.

The spelling of 18963078199728 in words is "eighteen trillion, nine hundred sixty-three billion, seventy-eight million, one hundred ninety-nine thousand, seven hundred twenty-eight".