19055563140 has 192 divisors, whose sum is σ = 55893196800. Its totient is φ = 4846293504.

The previous prime is 19055563129. The next prime is 19055563169. The reversal of 19055563140 is 4136555091.

It is a happy number.

It is a super-2 number, since 2×19055563140² (a number of 21 digits) contains 22 as substring.

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 63 ways as a sum of consecutive naturals, for example, 31392717 + ... + 31393323.

It is an arithmetic number, because the mean of its divisors is an integer number (291110400).

Almost surely, 2^19055563140 is an apocalyptic number.

19055563140 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 19055563140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27946598400).

19055563140 is an abundant number, since it is smaller than the sum of its proper divisors (36837633660).

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

19055563140 is a wasteful number, since it uses less digits than its factorization.

19055563140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914 (or 912 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 39.

The spelling of 19055563140 in words is "nineteen billion, fifty-five million, five hundred sixty-three thousand, one hundred forty".