32165521601641 has 2 divisors, whose sum is σ = 32165521601642. Its totient is φ = 32165521601640.

The previous prime is 32165521601639. The next prime is 32165521601723. The reversal of 32165521601641 is 14610612556123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22114719511641 + 10050802090000 = 4702629^2 + 3170300^2 .

It is a cyclic number.

It is not a de Polignac number, because 32165521601641 - 2¹ = 32165521601639 is a prime.

Together with 32165521601639, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (32165521601611) 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, 16082760800820 + 16082760800821.

It is an arithmetic number, because the mean of its divisors is an integer number (16082760800821).

Almost surely, 2^{32165521601641} is an apocalyptic number.

It is an amenable number.

32165521601641 is a deficient number, since it is larger than the sum of its proper divisors (1).

32165521601641 is an equidigital number, since it uses as much as digits as its factorization.

32165521601641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 32165521601641 in words is "thirty-two trillion, one hundred sixty-five billion, five hundred twenty-one million, six hundred one thousand, six hundred forty-one".