12135637802 has 8 divisors (see below), whose sum is σ = 18501874212. Its totient is φ = 5968346400.

The previous prime is 12135637793. The next prime is 12135637819. The reversal of 12135637802 is 20873653121.

12135637802 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11986089361 + 149548441 = 109481^2 + 12229^2 .

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

It is a super-2 number, since 2×12135637802² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49736099 + ... + 49736342.

Almost surely, 2^12135637802 is an apocalyptic number.

12135637802 is a deficient number, since it is larger than the sum of its proper divisors (6366236410).

12135637802 is an equidigital number, since it uses as much as digits as its factorization.

12135637802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99472504.

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 12135637802 in words is "twelve billion, one hundred thirty-five million, six hundred thirty-seven thousand, eight hundred two".