20750618008818 has 256 divisors, whose sum is σ = 51541428142080. Its totient is φ = 6158200089600.

The previous prime is 20750618008763. The next prime is 20750618008829. The reversal of 20750618008818 is 81880081605702.

20750618008818 is a `hidden beast` number, since 2 + 0 + 7 + 5 + 0 + 618 + 0 + 0 + 8 + 8 + 18 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 408716871 + ... + 408767637.

It is an arithmetic number, because the mean of its divisors is an integer number (201333703680).

Almost surely, 2^{20750618008818} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20750618008818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25770714071040).

20750618008818 is an abundant number, since it is smaller than the sum of its proper divisors (30790810133262).

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

20750618008818 is a wasteful number, since it uses less digits than its factorization.

20750618008818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51150 (or 51144 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 54.

The spelling of 20750618008818 in words is "twenty trillion, seven hundred fifty billion, six hundred eighteen million, eight thousand, eight hundred eighteen".