1980026017728 has 168 divisors, whose sum is σ = 5918947532160. Its totient is φ = 579317437440.

The previous prime is 1980026017691. The next prime is 1980026017759. The reversal of 1980026017728 is 8277106200891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1218813 + ... + 2333571.

Almost surely, 2^{1980026017728} 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 1980026017728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2959473766080).

1980026017728 is an abundant number, since it is smaller than the sum of its proper divisors (3938921514432).

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

1980026017728 is a wasteful number, since it uses less digits than its factorization.

1980026017728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114843 (or 1114804 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 51.

The spelling of 1980026017728 in words is "one trillion, nine hundred eighty billion, twenty-six million, seventeen thousand, seven hundred twenty-eight".