161648033101 has 2 divisors, whose sum is σ = 161648033102. Its totient is φ = 161648033100.

The previous prime is 161648033033. The next prime is 161648033143. The reversal of 161648033101 is 101330846161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161002365001 + 645668100 = 401251^2 + 25410^2 .

It is a cyclic number.

It is not a de Polignac number, because 161648033101 - 2²¹ = 161645935949 is a prime.

It is a super-2 number, since 2×161648033101² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161648033201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80824016550 + 80824016551.

It is an arithmetic number, because the mean of its divisors is an integer number (80824016551).

Almost surely, 2^161648033101 is an apocalyptic number.

It is an amenable number.

161648033101 is a deficient number, since it is larger than the sum of its proper divisors (1).

161648033101 is an equidigital number, since it uses as much as digits as its factorization.

161648033101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 34.

Adding to 161648033101 its reverse (101330846161), we get a palindrome (262978879262).

The spelling of 161648033101 in words is "one hundred sixty-one billion, six hundred forty-eight million, thirty-three thousand, one hundred one".