2636644144013 has 4 divisors (see below), whose sum is σ = 2876339066208. Its totient is φ = 2396949221820.

The previous prime is 2636644143979. The next prime is 2636644144019. The reversal of 2636644144013 is 3104414466362.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2636644144013 - 2²² = 2636639949709 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 (2636644144019) 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, 119847461081 + ... + 119847461102.

It is an arithmetic number, because the mean of its divisors is an integer number (719084766552).

Almost surely, 2^{2636644144013} is an apocalyptic number.

It is an amenable number.

2636644144013 is a deficient number, since it is larger than the sum of its proper divisors (239694922195).

2636644144013 is a wasteful number, since it uses less digits than its factorization.

2636644144013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239694922194.

The product of its (nonzero) digits is 995328, while the sum is 44.

The spelling of 2636644144013 in words is "two trillion, six hundred thirty-six billion, six hundred forty-four million, one hundred forty-four thousand, thirteen".