12661503035 has 4 divisors (see below), whose sum is σ = 15193803648. Its totient is φ = 10129202424.

The previous prime is 12661503017. The next prime is 12661503061. The reversal of 12661503035 is 53030516621.

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

It is a cyclic number.

It is not a de Polignac number, because 12661503035 - 2³² = 8366535739 is a prime.

It is a super-2 number, since 2×12661503035² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12661502992 and 12661503010.

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, 1266150299 + ... + 1266150308.

It is an arithmetic number, because the mean of its divisors is an integer number (3798450912).

Almost surely, 2^12661503035 is an apocalyptic number.

12661503035 is a deficient number, since it is larger than the sum of its proper divisors (2532300613).

12661503035 is an equidigital number, since it uses as much as digits as its factorization.

12661503035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2532300612.

The product of its (nonzero) digits is 16200, while the sum is 32.

The spelling of 12661503035 in words is "twelve billion, six hundred sixty-one million, five hundred three thousand, thirty-five".