19243335680 has 72 divisors (see below), whose sum is σ = 46185402312. Its totient is φ = 7697072128.

The previous prime is 19243335677. The next prime is 19243335697. The reversal of 19243335680 is 8653334291.

It is a super-2 number, since 2×19243335680² (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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 640679 + ... + 670041.

It is an arithmetic number, because the mean of its divisors is an integer number (641463921).

Almost surely, 2^19243335680 is an apocalyptic number.

19243335680 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 19243335680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23092701156).

19243335680 is an abundant number, since it is smaller than the sum of its proper divisors (26942066632).

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

19243335680 is an frugal number, since it uses more digits than its factorization.

19243335680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29402 (or 29370 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 44.

The spelling of 19243335680 in words is "nineteen billion, two hundred forty-three million, three hundred thirty-five thousand, six hundred eighty".