19740080568 has 128 divisors (see below), whose sum is σ = 54026945280. Its totient is φ = 5973903360.

The previous prime is 19740080543. The next prime is 19740080573. The reversal of 19740080568 is 86508004791.

It is a super-2 number, since 2×19740080568² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6239355 + ... + 6242517.

It is an arithmetic number, because the mean of its divisors is an integer number (422085510).

Almost surely, 2^19740080568 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 19740080568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27013472640).

19740080568 is an abundant number, since it is smaller than the sum of its proper divisors (34286864712).

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

19740080568 is a wasteful number, since it uses less digits than its factorization.

19740080568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3509 (or 3505 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 19740080568 in words is "nineteen billion, seven hundred forty million, eighty thousand, five hundred sixty-eight".