19421337999 has 64 divisors (see below), whose sum is σ = 32247853056. Its totient is φ = 10142060544.

The previous prime is 19421337997. The next prime is 19421338007. The reversal of 19421337999 is 99973312491.

It is not a de Polignac number, because 19421337999 - 2¹ = 19421337997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19421337997) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8148762 + ... + 8151144.

It is an arithmetic number, because the mean of its divisors is an integer number (503872704).

Almost surely, 2^19421337999 is an apocalyptic number.

19421337999 is a deficient number, since it is larger than the sum of its proper divisors (12826515057).

19421337999 is a wasteful number, since it uses less digits than its factorization.

19421337999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3064.

The product of its digits is 3306744, while the sum is 57.

The spelling of 19421337999 in words is "nineteen billion, four hundred twenty-one million, three hundred thirty-seven thousand, nine hundred ninety-nine".