19104021854764 has 72 divisors (see below), whose sum is σ = 42439798960272. Its totient is φ = 7440672032640.

The previous prime is 19104021854681. The next prime is 19104021854791. The reversal of 19104021854764 is 46745812040191.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5088954 + ... + 8006590.

It is an arithmetic number, because the mean of its divisors is an integer number (589441652226).

Almost surely, 2^{19104021854764} is an apocalyptic number.

19104021854764 is a gapful number since it is divisible by the number (14) 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 19104021854764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21219899480136).

19104021854764 is an abundant number, since it is smaller than the sum of its proper divisors (23335777105508).

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

19104021854764 is a wasteful number, since it uses less digits than its factorization.

19104021854764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2920703 (or 2920694 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 19104021854764 in words is "nineteen trillion, one hundred four billion, twenty-one million, eight hundred fifty-four thousand, seven hundred sixty-four".