20201092139 has 2 divisors, whose sum is σ = 20201092140. Its totient is φ = 20201092138.

The previous prime is 20201092019. The next prime is 20201092141. The reversal of 20201092139 is 93129010202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20201092139 - 2²⁸ = 19932656683 is a prime.

It is a super-3 number, since 3×20201092139³ (a number of 32 digits) contains 333 as substring.

Together with 20201092141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20201092159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100546069 + 10100546070.

It is an arithmetic number, because the mean of its divisors is an integer number (10100546070).

Almost surely, 2^20201092139 is an apocalyptic number.

20201092139 is a deficient number, since it is larger than the sum of its proper divisors (1).

20201092139 is an equidigital number, since it uses as much as digits as its factorization.

20201092139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 20201092139 in words is "twenty billion, two hundred one million, ninety-two thousand, one hundred thirty-nine".