165116556203 has 2 divisors, whose sum is σ = 165116556204. Its totient is φ = 165116556202.

The previous prime is 165116556139. The next prime is 165116556233. The reversal of 165116556203 is 302655611561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165116556203 - 2⁶ = 165116556139 is a prime.

It is not a weakly prime, because it can be changed into another prime (165116556233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82558278101 + 82558278102.

It is an arithmetic number, because the mean of its divisors is an integer number (82558278102).

Almost surely, 2^165116556203 is an apocalyptic number.

165116556203 is a deficient number, since it is larger than the sum of its proper divisors (1).

165116556203 is an equidigital number, since it uses as much as digits as its factorization.

165116556203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 165116556203 in words is "one hundred sixty-five billion, one hundred sixteen million, five hundred fifty-six thousand, two hundred three".