12661503034 has 4 divisors (see below), whose sum is σ = 18992254554. Its totient is φ = 6330751516.

The previous prime is 12661503017. The next prime is 12661503061. The reversal of 12661503034 is 43030516621.

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., 9205826809 + 3455676225 = 95947^2 + 58785^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12661502987 and 12661503005.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3165375757 + ... + 3165375760.

Almost surely, 2^12661503034 is an apocalyptic number.

12661503034 is a deficient number, since it is larger than the sum of its proper divisors (6330751520).

12661503034 is an equidigital number, since it uses as much as digits as its factorization.

12661503034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6330751519.

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 12661503034 in words is "twelve billion, six hundred sixty-one million, five hundred three thousand, thirty-four".