6567998123 has 2 divisors, whose sum is σ = 6567998124. Its totient is φ = 6567998122.

The previous prime is 6567998051. The next prime is 6567998153. The reversal of 6567998123 is 3218997656.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6567998123 - 2⁸ = 6567997867 is a prime.

It is not a weakly prime, because it can be changed into another prime (6567998153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3283999061 + 3283999062.

It is an arithmetic number, because the mean of its divisors is an integer number (3283999062).

Almost surely, 2^6567998123 is an apocalyptic number.

6567998123 is a deficient number, since it is larger than the sum of its proper divisors (1).

6567998123 is an equidigital number, since it uses as much as digits as its factorization.

6567998123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 56.

The square root of 6567998123 is about 81043.1867771746. The cubic root of 6567998123 is about 1872.7408047158.

The spelling of 6567998123 in words is "six billion, five hundred sixty-seven million, nine hundred ninety-eight thousand, one hundred twenty-three".