19955126416 has 20 divisors (see below), whose sum is σ = 40344060672. Its totient is φ = 9543755936.

The previous prime is 19955126363. The next prime is 19955126419. The reversal of 19955126416 is 61462155991.

It is a self number, because there is not a number n which added to its sum of digits gives 19955126416.

It is not an unprimeable number, because it can be changed into a prime (19955126419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27112576 + ... + 27113311.

Almost surely, 2^19955126416 is an apocalyptic number.

19955126416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19955126416 is an abundant number, since it is smaller than the sum of its proper divisors (20388934256).

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

19955126416 is a wasteful number, since it uses less digits than its factorization.

19955126416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54225918 (or 54225912 counting only the distinct ones).

The product of its digits is 583200, while the sum is 49.

The spelling of 19955126416 in words is "nineteen billion, nine hundred fifty-five million, one hundred twenty-six thousand, four hundred sixteen".