1636345796789 has 8 divisors (see below), whose sum is σ = 1785218156832. Its totient is φ = 1487492378640.

The previous prime is 1636345796737. The next prime is 1636345796807. The reversal of 1636345796789 is 9876975436361.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1636345796789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1636345790789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4554539 + ... + 4900664.

It is an arithmetic number, because the mean of its divisors is an integer number (223152269604).

Almost surely, 2^{1636345796789} is an apocalyptic number.

It is an amenable number.

1636345796789 is a deficient number, since it is larger than the sum of its proper divisors (148872360043).

1636345796789 is a wasteful number, since it uses less digits than its factorization.

1636345796789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9470947.

The product of its digits is 1234517760, while the sum is 74.

The spelling of 1636345796789 in words is "one trillion, six hundred thirty-six billion, three hundred forty-five million, seven hundred ninety-six thousand, seven hundred eighty-nine".