20168533337 has 8 divisors (see below), whose sum is σ = 20658312576. Its totient is φ = 19679697072.

The previous prime is 20168533303. The next prime is 20168533351. The reversal of 20168533337 is 73333586102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20168533337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20168533294 and 20168533303.

It is not an unprimeable number, because it can be changed into a prime (20168533397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192353 + ... + 278094.

It is an arithmetic number, because the mean of its divisors is an integer number (2582289072).

Almost surely, 2^20168533337 is an apocalyptic number.

It is an amenable number.

20168533337 is a deficient number, since it is larger than the sum of its proper divisors (489779239).

20168533337 is an equidigital number, since it uses as much as digits as its factorization.

20168533337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471487.

The product of its (nonzero) digits is 272160, while the sum is 41.

The spelling of 20168533337 in words is "twenty billion, one hundred sixty-eight million, five hundred thirty-three thousand, three hundred thirty-seven".