6567121139 has 2 divisors, whose sum is σ = 6567121140. Its totient is φ = 6567121138.

The previous prime is 6567121051. The next prime is 6567121153. The reversal of 6567121139 is 9311217656.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6567121139 - 2¹⁶ = 6567055603 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6567121096 and 6567121105.

It is not a weakly prime, because it can be changed into another prime (6567121159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3283560569 + 3283560570.

It is an arithmetic number, because the mean of its divisors is an integer number (3283560570).

Almost surely, 2^6567121139 is an apocalyptic number.

6567121139 is a deficient number, since it is larger than the sum of its proper divisors (1).

6567121139 is an equidigital number, since it uses as much as digits as its factorization.

6567121139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 41.

The square root of 6567121139 is about 81037.7759998385. The cubic root of 6567121139 is about 1872.6574491893.

The spelling of 6567121139 in words is "six billion, five hundred sixty-seven million, one hundred twenty-one thousand, one hundred thirty-nine".