32166512605 has 4 divisors (see below), whose sum is σ = 38599815132. Its totient is φ = 25733210080.

The previous prime is 32166512563. The next prime is 32166512657. The reversal of 32166512605 is 50621566123.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23576374116 + 8590138489 = 153546^2 + 92683^2 .

It is not a de Polignac number, because 32166512605 - 2⁹ = 32166512093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3216651256 + ... + 3216651265.

It is an arithmetic number, because the mean of its divisors is an integer number (9649953783).

Almost surely, 2^32166512605 is an apocalyptic number.

It is an amenable number.

32166512605 is a deficient number, since it is larger than the sum of its proper divisors (6433302527).

32166512605 is an equidigital number, since it uses as much as digits as its factorization.

32166512605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6433302526.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 32166512605 in words is "thirty-two billion, one hundred sixty-six million, five hundred twelve thousand, six hundred five".