161036036233 has 2 divisors, whose sum is σ = 161036036234. Its totient is φ = 161036036232.

The previous prime is 161036036191. The next prime is 161036036263. The reversal of 161036036233 is 332630630161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132661307529 + 28374728704 = 364227^2 + 168448^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161036036233 is a prime.

It is not a weakly prime, because it can be changed into another prime (161036036263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80518018116 + 80518018117.

It is an arithmetic number, because the mean of its divisors is an integer number (80518018117).

Almost surely, 2^161036036233 is an apocalyptic number.

It is an amenable number.

161036036233 is a deficient number, since it is larger than the sum of its proper divisors (1).

161036036233 is an equidigital number, since it uses as much as digits as its factorization.

161036036233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 34.

Adding to 161036036233 its reverse (332630630161), we get a palindrome (493666666394).

The spelling of 161036036233 in words is "one hundred sixty-one billion, thirty-six million, thirty-six thousand, two hundred thirty-three".