32165161403281 has 2 divisors, whose sum is σ = 32165161403282. Its totient is φ = 32165161403280.

The previous prime is 32165161403183. The next prime is 32165161403359. The reversal of 32165161403281 is 18230416156123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25563550593681 + 6601610809600 = 5056041^2 + 2569360^2 .

It is a cyclic number.

It is not a de Polignac number, because 32165161403281 - 2⁷ = 32165161403153 is a prime.

It is a super-2 number, since 2×32165161403281² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (32165161406281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16082580701640 + 16082580701641.

It is an arithmetic number, because the mean of its divisors is an integer number (16082580701641).

Almost surely, 2^{32165161403281} is an apocalyptic number.

It is an amenable number.

32165161403281 is a deficient number, since it is larger than the sum of its proper divisors (1).

32165161403281 is an equidigital number, since it uses as much as digits as its factorization.

32165161403281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 32165161403281 in words is "thirty-two trillion, one hundred sixty-five billion, one hundred sixty-one million, four hundred three thousand, two hundred eighty-one".