32166220117 has 2 divisors, whose sum is σ = 32166220118. Its totient is φ = 32166220116.

The previous prime is 32166220109. The next prime is 32166220181. The reversal of 32166220117 is 71102266123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17236801521 + 14929418596 = 131289^2 + 122186^2 .

It is a cyclic number.

It is not a de Polignac number, because 32166220117 - 2³ = 32166220109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32166220417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16083110058 + 16083110059.

It is an arithmetic number, because the mean of its divisors is an integer number (16083110059).

Almost surely, 2^32166220117 is an apocalyptic number.

It is an amenable number.

32166220117 is a deficient number, since it is larger than the sum of its proper divisors (1).

32166220117 is an equidigital number, since it uses as much as digits as its factorization.

32166220117 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 31.

The spelling of 32166220117 in words is "thirty-two billion, one hundred sixty-six million, two hundred twenty thousand, one hundred seventeen".