12605446522 has 8 divisors (see below), whose sum is σ = 18990738900. Its totient is φ = 6275200224.

The previous prime is 12605446481. The next prime is 12605446523. The reversal of 12605446522 is 22564450621.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12571118641 + 34327881 = 112121^2 + 5859^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12605446523) 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 in 3 ways as a sum of consecutive naturals, for example, 13760947 + ... + 13761862.

Almost surely, 2^12605446522 is an apocalyptic number.

12605446522 is a deficient number, since it is larger than the sum of its proper divisors (6385292378).

12605446522 is a wasteful number, since it uses less digits than its factorization.

12605446522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27523040.

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 12605446522 in words is "twelve billion, six hundred five million, four hundred forty-six thousand, five hundred twenty-two".