32105612405 has 4 divisors (see below), whose sum is σ = 38526734892. Its totient is φ = 25684489920.

The previous prime is 32105612401. The next prime is 32105612419. The reversal of 32105612405 is 50421650123.

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 22017217924 + 10088394481 = 148382^2 + 100441^2 .

It is not a de Polignac number, because 32105612405 - 2² = 32105612401 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32105612401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3210561236 + ... + 3210561245.

It is an arithmetic number, because the mean of its divisors is an integer number (9631683723).

Almost surely, 2^32105612405 is an apocalyptic number.

It is an amenable number.

32105612405 is a deficient number, since it is larger than the sum of its proper divisors (6421122487).

32105612405 is an equidigital number, since it uses as much as digits as its factorization.

32105612405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6421122486.

The product of its (nonzero) digits is 7200, while the sum is 29.

The spelling of 32105612405 in words is "thirty-two billion, one hundred five million, six hundred twelve thousand, four hundred five".