12135663802 has 8 divisors (see below), whose sum is σ = 18281622996. Its totient is φ = 6041789472.

The previous prime is 12135663733. The next prime is 12135663821. The reversal of 12135663802 is 20836653121.

It can be written as a sum of positive squares in 2 ways, for example, as 11509212961 + 626450841 = 107281^2 + 25029^2 .

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

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, 13020633 + ... + 13021564.

Almost surely, 2^12135663802 is an apocalyptic number.

12135663802 is a deficient number, since it is larger than the sum of its proper divisors (6145959194).

12135663802 is a wasteful number, since it uses less digits than its factorization.

12135663802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26042432.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 12135663802 in words is "twelve billion, one hundred thirty-five million, six hundred sixty-three thousand, eight hundred two".