12651106106 has 4 divisors (see below), whose sum is σ = 18976659162. Its totient is φ = 6325553052.

The previous prime is 12651106049. The next prime is 12651106109. The reversal of 12651106106 is 60160115621.

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

It can be written as a sum of positive squares in only one way, i.e., 11845057225 + 806048881 = 108835^2 + 28391^2 .

It is not an unprimeable number, because it can be changed into a prime (12651106109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3162776525 + ... + 3162776528.

Almost surely, 2^12651106106 is an apocalyptic number.

12651106106 is a deficient number, since it is larger than the sum of its proper divisors (6325553056).

12651106106 is an equidigital number, since it uses as much as digits as its factorization.

12651106106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6325553055.

The product of its (nonzero) digits is 2160, while the sum is 29.

The spelling of 12651106106 in words is "twelve billion, six hundred fifty-one million, one hundred six thousand, one hundred six".