12636005875501 has 4 divisors (see below), whose sum is σ = 12637407860092. Its totient is φ = 12634603890912.

The previous prime is 12636005875489. The next prime is 12636005875601. The reversal of 12636005875501 is 10557850063621.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4083592224100 + 8552413651401 = 2020790^2 + 2924451^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12636005875501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12636005875001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700978776 + ... + 700996801.

It is an arithmetic number, because the mean of its divisors is an integer number (3159351965023).

Almost surely, 2^{12636005875501} is an apocalyptic number.

It is an amenable number.

12636005875501 is a deficient number, since it is larger than the sum of its proper divisors (1401984591).

12636005875501 is an equidigital number, since it uses as much as digits as its factorization.

12636005875501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401984590.

The product of its (nonzero) digits is 1512000, while the sum is 49.

The spelling of 12636005875501 in words is "twelve trillion, six hundred thirty-six billion, five million, eight hundred seventy-five thousand, five hundred one".