18455012688 has 240 divisors, whose sum is σ = 58085389440. Its totient is φ = 5024904192.

The previous prime is 18455012671. The next prime is 18455012767. The reversal of 18455012688 is 88621055481.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21042906 + ... + 21043782.

It is an arithmetic number, because the mean of its divisors is an integer number (242022456).

Almost surely, 2^18455012688 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 18455012688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29042694720).

18455012688 is an abundant number, since it is smaller than the sum of its proper divisors (39630376752).

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

18455012688 is a wasteful number, since it uses less digits than its factorization.

18455012688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314 (or 1301 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 48.

The spelling of 18455012688 in words is "eighteen billion, four hundred fifty-five million, twelve thousand, six hundred eighty-eight".