20168211382 has 8 divisors (see below), whose sum is σ = 33002527752. Its totient is φ = 9167368800.

The previous prime is 20168211373. The next prime is 20168211383. The reversal of 20168211382 is 28311286102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20168211383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458368419 + ... + 458368462.

It is an arithmetic number, because the mean of its divisors is an integer number (4125315969).

Almost surely, 2^20168211382 is an apocalyptic number.

20168211382 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20168211382 is a deficient number, since it is larger than the sum of its proper divisors (12834316370).

20168211382 is a wasteful number, since it uses less digits than its factorization.

20168211382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916736894.

The product of its (nonzero) digits is 9216, while the sum is 34.

Adding to 20168211382 its reverse (28311286102), we get a palindrome (48479497484).

The spelling of 20168211382 in words is "twenty billion, one hundred sixty-eight million, two hundred eleven thousand, three hundred eighty-two".