20268822139 has 2 divisors, whose sum is σ = 20268822140. Its totient is φ = 20268822138.

The previous prime is 20268822121. The next prime is 20268822179. The reversal of 20268822139 is 93122886202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20268822139 - 2⁷ = 20268822011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20268822095 and 20268822104.

It is not a weakly prime, because it can be changed into another prime (20268822179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10134411069 + 10134411070.

It is an arithmetic number, because the mean of its divisors is an integer number (10134411070).

Almost surely, 2^20268822139 is an apocalyptic number.

20268822139 is a deficient number, since it is larger than the sum of its proper divisors (1).

20268822139 is an equidigital number, since it uses as much as digits as its factorization.

20268822139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 43.

The spelling of 20268822139 in words is "twenty billion, two hundred sixty-eight million, eight hundred twenty-two thousand, one hundred thirty-nine".