3636128077968 has 80 divisors (see below), whose sum is σ = 9698060284416. Its totient is φ = 1172736629760.

The previous prime is 3636128077961. The next prime is 3636128077973. The reversal of 3636128077968 is 8697708216363.

It is a junction number, because it is equal to n+sod(n) for n = 3636128077899 and 3636128077908.

It is not an unprimeable number, because it can be changed into a prime (3636128077961) 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, 8293180 + ... + 8720612.

Almost surely, 2^{3636128077968} is an apocalyptic number.

It is an amenable number.

3636128077968 is an abundant number, since it is smaller than the sum of its proper divisors (6061932206448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3636128077968 is a wasteful number, since it uses less digits than its factorization.

3636128077968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433192 (or 433186 counting only the distinct ones).

The product of its (nonzero) digits is 109734912, while the sum is 66.

The spelling of 3636128077968 in words is "three trillion, six hundred thirty-six billion, one hundred twenty-eight million, seventy-seven thousand, nine hundred sixty-eight".