203123161118159 has 2 divisors, whose sum is σ = 203123161118160. Its totient is φ = 203123161118158.

The previous prime is 203123161118153. The next prime is 203123161118173. The reversal of 203123161118159 is 951811161321302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 203123161118159 - 2³⁶ = 203054441641423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203123161118153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101561580559079 + 101561580559080.

It is an arithmetic number, because the mean of its divisors is an integer number (101561580559080).

Almost surely, 2^{203123161118159} is an apocalyptic number.

203123161118159 is a deficient number, since it is larger than the sum of its proper divisors (1).

203123161118159 is an equidigital number, since it uses as much as digits as its factorization.

203123161118159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 44.

The spelling of 203123161118159 in words is "two hundred three trillion, one hundred twenty-three billion, one hundred sixty-one million, one hundred eighteen thousand, one hundred fifty-nine".