19939403267004 has 96 divisors (see below), whose sum is σ = 50441907962880. Its totient is φ = 6130174574784.

The previous prime is 19939403266999. The next prime is 19939403267029. The reversal of 19939403267004 is 40076230493991.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31933969 + ... + 32552375.

It is an arithmetic number, because the mean of its divisors is an integer number (525436541280).

Almost surely, 2^{19939403267004} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19939403267004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25220953981440).

19939403267004 is an abundant number, since it is smaller than the sum of its proper divisors (30502504695876).

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

19939403267004 is a wasteful number, since it uses less digits than its factorization.

19939403267004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619676 (or 619648 counting only the distinct ones).

The product of its (nonzero) digits is 8817984, while the sum is 57.

The spelling of 19939403267004 in words is "nineteen trillion, nine hundred thirty-nine billion, four hundred three million, two hundred sixty-seven thousand, four".