18270520679 has 2 divisors, whose sum is σ = 18270520680. Its totient is φ = 18270520678.

The previous prime is 18270520673. The next prime is 18270520699. The reversal of 18270520679 is 97602507281.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18270520679 - 2⁴ = 18270520663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18270520673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9135260339 + 9135260340.

It is an arithmetic number, because the mean of its divisors is an integer number (9135260340).

Almost surely, 2^18270520679 is an apocalyptic number.

18270520679 is a deficient number, since it is larger than the sum of its proper divisors (1).

18270520679 is an equidigital number, since it uses as much as digits as its factorization.

18270520679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 47.

The spelling of 18270520679 in words is "eighteen billion, two hundred seventy million, five hundred twenty thousand, six hundred seventy-nine".