32420321173 has 2 divisors, whose sum is σ = 32420321174. Its totient is φ = 32420321172.

The previous prime is 32420321107. The next prime is 32420321183. The reversal of 32420321173 is 37112302423.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26121994129 + 6298327044 = 161623^2 + 79362^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32420321173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32420321183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16210160586 + 16210160587.

It is an arithmetic number, because the mean of its divisors is an integer number (16210160587).

Almost surely, 2^32420321173 is an apocalyptic number.

It is an amenable number.

32420321173 is a deficient number, since it is larger than the sum of its proper divisors (1).

32420321173 is an equidigital number, since it uses as much as digits as its factorization.

32420321173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 28.

Adding to 32420321173 its reverse (37112302423), we get a palindrome (69532623596).

The spelling of 32420321173 in words is "thirty-two billion, four hundred twenty million, three hundred twenty-one thousand, one hundred seventy-three".