205167430859 has 2 divisors, whose sum is σ = 205167430860. Its totient is φ = 205167430858.

The previous prime is 205167430837. The next prime is 205167430861. The reversal of 205167430859 is 958034761502.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205167430859 is a prime.

Together with 205167430861, 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 (205167430879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102583715429 + 102583715430.

It is an arithmetic number, because the mean of its divisors is an integer number (102583715430).

It is a 1-persistent number, because it is pandigital, but 2⋅205167430859 = 410334861718 is not.

Almost surely, 2^205167430859 is an apocalyptic number.

205167430859 is a deficient number, since it is larger than the sum of its proper divisors (1).

205167430859 is an equidigital number, since it uses as much as digits as its factorization.

205167430859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 205167430859 in words is "two hundred five billion, one hundred sixty-seven million, four hundred thirty thousand, eight hundred fifty-nine".