19954876416 has 120 divisors (see below), whose sum is σ = 53529219744. Its totient is φ = 6611927040.

The previous prime is 19954876411. The next prime is 19954876441. The reversal of 19954876416 is 61467845991.

It is a self number, because there is not a number n which added to its sum of digits gives 19954876416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19954876411) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8895391 + ... + 8897633.

Almost surely, 2^19954876416 is an apocalyptic number.

19954876416 is a gapful number since it is divisible by the number (16) 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 19954876416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26764609872).

19954876416 is an abundant number, since it is smaller than the sum of its proper divisors (33574343328).

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

19954876416 is an equidigital number, since it uses as much as digits as its factorization.

19954876416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2455 (or 2429 counting only the distinct ones).

The product of its digits is 13063680, while the sum is 60.

The spelling of 19954876416 in words is "nineteen billion, nine hundred fifty-four million, eight hundred seventy-six thousand, four hundred sixteen".