1612172166203 has 2 divisors, whose sum is σ = 1612172166204. Its totient is φ = 1612172166202.

The previous prime is 1612172166181. The next prime is 1612172166221. The reversal of 1612172166203 is 3026612712161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1612172166203 - 2⁶ = 1612172166139 is a prime.

It is not a weakly prime, because it can be changed into another prime (1612172766203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806086083101 + 806086083102.

It is an arithmetic number, because the mean of its divisors is an integer number (806086083102).

Almost surely, 2^{1612172166203} is an apocalyptic number.

1612172166203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1612172166203 is an equidigital number, since it uses as much as digits as its factorization.

1612172166203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

Adding to 1612172166203 its reverse (3026612712161), we get a palindrome (4638784878364).

The spelling of 1612172166203 in words is "one trillion, six hundred twelve billion, one hundred seventy-two million, one hundred sixty-six thousand, two hundred three".