20012013139 has 2 divisors, whose sum is σ = 20012013140. Its totient is φ = 20012013138.

The previous prime is 20012013089. The next prime is 20012013253. The reversal of 20012013139 is 93131021002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20012013139 - 2⁷ = 20012013011 is a prime.

It is not a weakly prime, because it can be changed into another prime (20012016139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006006569 + 10006006570.

It is an arithmetic number, because the mean of its divisors is an integer number (10006006570).

Almost surely, 2^20012013139 is an apocalyptic number.

20012013139 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012013139 is an equidigital number, since it uses as much as digits as its factorization.

20012013139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

The spelling of 20012013139 in words is "twenty billion, twelve million, thirteen thousand, one hundred thirty-nine".