18463404401280 has 1024 divisors, whose sum is σ = 69800865868800. Its totient is φ = 4596455964672.

The previous prime is 18463404401279. The next prime is 18463404401303. The reversal of 18463404401280 is 8210440436481.

18463404401280 is a `hidden beast` number, since 1 + 8 + 4 + 634 + 0 + 4 + 4 + 0 + 1 + 2 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 27272384302 + ... + 27272384978.

It is an arithmetic number, because the mean of its divisors is an integer number (68164908075).

Almost surely, 2^{18463404401280} is an apocalyptic number.

18463404401280 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 18463404401280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34900432934400).

18463404401280 is an abundant number, since it is smaller than the sum of its proper divisors (51337461467520).

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

18463404401280 is a wasteful number, since it uses less digits than its factorization.

18463404401280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338 (or 1320 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 45.

The spelling of 18463404401280 in words is "eighteen trillion, four hundred sixty-three billion, four hundred four million, four hundred one thousand, two hundred eighty".