20001333139 has 2 divisors, whose sum is σ = 20001333140. Its totient is φ = 20001333138.

The previous prime is 20001333073. The next prime is 20001333161. The reversal of 20001333139 is 93133310002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20001333139 - 2⁹ = 20001332627 is a prime.

It is not a weakly prime, because it can be changed into another prime (20001333179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000666569 + 10000666570.

It is an arithmetic number, because the mean of its divisors is an integer number (10000666570).

Almost surely, 2^20001333139 is an apocalyptic number.

20001333139 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001333139 is an equidigital number, since it uses as much as digits as its factorization.

20001333139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 25.

The spelling of 20001333139 in words is "twenty billion, one million, three hundred thirty-three thousand, one hundred thirty-nine".