19873276578 has 48 divisors (see below), whose sum is σ = 44485459200. Its totient is φ = 6405297120.

The previous prime is 19873276567. The next prime is 19873276597. The reversal of 19873276578 is 87567237891.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 671293 + ... + 700271.

It is an arithmetic number, because the mean of its divisors is an integer number (926780400).

Almost surely, 2^19873276578 is an apocalyptic number.

19873276578 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19873276578, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22242729600).

19873276578 is an abundant number, since it is smaller than the sum of its proper divisors (24612182622).

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

19873276578 is a wasteful number, since it uses less digits than its factorization.

19873276578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30247 (or 30244 counting only the distinct ones).

The product of its digits is 35562240, while the sum is 63.

The spelling of 19873276578 in words is "nineteen billion, eight hundred seventy-three million, two hundred seventy-six thousand, five hundred seventy-eight".