13636641441 has 16 divisors (see below), whose sum is σ = 18296893440. Its totient is φ = 9033797760.

The previous prime is 13636641437. The next prime is 13636641479. The reversal of 13636641441 is 14414663631.

It is not a de Polignac number, because 13636641441 - 2² = 13636641437 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13636641441.

It is not an unprimeable number, because it can be changed into a prime (13636642441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1178080 + ... + 1189598.

It is an arithmetic number, because the mean of its divisors is an integer number (1143555840).

Almost surely, 2^13636641441 is an apocalyptic number.

It is an amenable number.

13636641441 is a deficient number, since it is larger than the sum of its proper divisors (4660251999).

13636641441 is a wasteful number, since it uses less digits than its factorization.

13636641441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13976.

The product of its digits is 124416, while the sum is 39.

The spelling of 13636641441 in words is "thirteen billion, six hundred thirty-six million, six hundred forty-one thousand, four hundred forty-one".