19719045726380 has 576 divisors, whose sum is σ = 57450585346560. Its totient is φ = 5587597209600.

The previous prime is 19719045726257. The next prime is 19719045726397. The reversal of 19719045726380 is 8362754091791.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 12879846215 + ... + 12879847745.

It is an arithmetic number, because the mean of its divisors is an integer number (99740599560).

It is a 2-persistent number, because it is pandigital, and so is 2⋅19719045726380 = 39438091452760, but 3⋅19719045726380 = 59157137179140 is not.

Almost surely, 2^{19719045726380} is an apocalyptic number.

19719045726380 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 19719045726380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28725292673280).

19719045726380 is an abundant number, since it is smaller than the sum of its proper divisors (37731539620180).

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

19719045726380 is a wasteful number, since it uses less digits than its factorization.

19719045726380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2910 (or 2901 counting only the distinct ones).

The product of its (nonzero) digits is 22861440, while the sum is 62.

The spelling of 19719045726380 in words is "nineteen trillion, seven hundred nineteen billion, forty-five million, seven hundred twenty-six thousand, three hundred eighty".