6706643631133 has 4 divisors (see below), whose sum is σ = 6706648841500. Its totient is φ = 6706638420768.

The previous prime is 6706643631131. The next prime is 6706643631157. The reversal of 6706643631133 is 3311363466076.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 300976223769 + 6405667407364 = 548613^2 + 2530942^2 .

It is a cyclic number.

It is not a de Polignac number, because 6706643631133 - 2¹ = 6706643631131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6706643631131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 877441 + ... + 3766057.

It is an arithmetic number, because the mean of its divisors is an integer number (1676662210375).

Almost surely, 2^{6706643631133} is an apocalyptic number.

It is an amenable number.

6706643631133 is a deficient number, since it is larger than the sum of its proper divisors (5210367).

6706643631133 is a wasteful number, since it uses less digits than its factorization.

6706643631133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5210366.

The product of its (nonzero) digits is 2939328, while the sum is 49.

The spelling of 6706643631133 in words is "six trillion, seven hundred six billion, six hundred forty-three million, six hundred thirty-one thousand, one hundred thirty-three".