133636638643 has 8 divisors (see below), whose sum is σ = 140673560000. Its totient is φ = 126600058728.

The previous prime is 133636638623. The next prime is 133636638661. The reversal of 133636638643 is 346836636331.

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-133636638643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133636638613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1269880 + ... + 1371082.

It is an arithmetic number, because the mean of its divisors is an integer number (17584195000).

Almost surely, 2^133636638643 is an apocalyptic number.

133636638643 is a deficient number, since it is larger than the sum of its proper divisors (7036921357).

133636638643 is a wasteful number, since it uses less digits than its factorization.

133636638643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170721.

The product of its digits is 10077696, while the sum is 52.

The spelling of 133636638643 in words is "one hundred thirty-three billion, six hundred thirty-six million, six hundred thirty-eight thousand, six hundred forty-three".