136643566633 has 24 divisors (see below), whose sum is σ = 160505798400. Its totient is φ = 115983473760.

The previous prime is 136643566589. The next prime is 136643566687. The reversal of 136643566633 is 336665346631.

It is a de Polignac number, because none of the positive numbers 2^k-136643566633 is a prime.

It is a super-2 number, since 2×136643566633² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136643566693) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2388360 + ... + 2444902.

It is an arithmetic number, because the mean of its divisors is an integer number (6687741600).

Almost surely, 2^136643566633 is an apocalyptic number.

It is an amenable number.

136643566633 is a deficient number, since it is larger than the sum of its proper divisors (23862231767).

136643566633 is a wasteful number, since it uses less digits than its factorization.

136643566633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57037 (or 57030 counting only the distinct ones).

The product of its digits is 12597120, while the sum is 52.

The spelling of 136643566633 in words is "one hundred thirty-six billion, six hundred forty-three million, five hundred sixty-six thousand, six hundred thirty-three".