19908280975720 has 128 divisors (see below), whose sum is σ = 48715373952000. Its totient is φ = 7294353315840.

The previous prime is 19908280975697. The next prime is 19908280975753. The reversal of 19908280975720 is 2757908280991.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26225014 + ... + 26973466.

It is an arithmetic number, because the mean of its divisors is an integer number (380588859000).

Almost surely, 2^{19908280975720} is an apocalyptic number.

19908280975720 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 19908280975720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24357686976000).

19908280975720 is an abundant number, since it is smaller than the sum of its proper divisors (28807092976280).

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

19908280975720 is a wasteful number, since it uses less digits than its factorization.

19908280975720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749643 (or 749639 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 67.

The spelling of 19908280975720 in words is "nineteen trillion, nine hundred eight billion, two hundred eighty million, nine hundred seventy-five thousand, seven hundred twenty".