18026416728780 has 24 divisors (see below), whose sum is σ = 50473966840752. Its totient is φ = 4807044460992.

The previous prime is 18026416728751. The next prime is 18026416728797. The reversal of 18026416728780 is 8782761462081.

It is a Harshad number since it is a multiple of its sum of digits (60), and also a Moran number because the ratio is a prime number: 300440278813 = 18026416728780 / (1 + 8 + 0 + 2 + 6 + 4 + 1 + 6 + 7 + 2 + 8 + 7 + 8 + 0).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150220139347 + ... + 150220139466.

It is an arithmetic number, because the mean of its divisors is an integer number (2103081951698).

Almost surely, 2^{18026416728780} is an apocalyptic number.

18026416728780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18026416728780 is an abundant number, since it is smaller than the sum of its proper divisors (32447550111972).

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

18026416728780 is a wasteful number, since it uses less digits than its factorization.

18026416728780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300440278825 (or 300440278823 counting only the distinct ones).

The product of its (nonzero) digits is 14450688, while the sum is 60.

The spelling of 18026416728780 in words is "eighteen trillion, twenty-six billion, four hundred sixteen million, seven hundred twenty-eight thousand, seven hundred eighty".