20219587899 has 12 divisors (see below), whose sum is σ = 31360993704. Its totient is φ = 11554050144.

The previous prime is 20219587897. The next prime is 20219587933. The reversal of 20219587899 is 99878591202.

It is not a de Polignac number, because 20219587899 - 2¹ = 20219587897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20219587897) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68773962 + ... + 68774255.

It is an arithmetic number, because the mean of its divisors is an integer number (2613416142).

Almost surely, 2^20219587899 is an apocalyptic number.

20219587899 is a deficient number, since it is larger than the sum of its proper divisors (11141405805).

20219587899 is a wasteful number, since it uses less digits than its factorization.

20219587899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137548234 (or 137548227 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 60.

The spelling of 20219587899 in words is "twenty billion, two hundred nineteen million, five hundred eighty-seven thousand, eight hundred ninety-nine".