19820044480 has 56 divisors (see below), whose sum is σ = 47214495360. Its totient is φ = 7924992000.

The previous prime is 19820044477. The next prime is 19820044487. The reversal of 19820044480 is 8444002891.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (19820044487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 950001 + ... + 970639.

Almost surely, 2^19820044480 is an apocalyptic number.

19820044480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19820044480 is an abundant number, since it is smaller than the sum of its proper divisors (27394450880).

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

19820044480 is a wasteful number, since it uses less digits than its factorization.

19820044480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23657 (or 23647 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The spelling of 19820044480 in words is "nineteen billion, eight hundred twenty million, forty-four thousand, four hundred eighty".