133394966689 has 4 divisors (see below), whose sum is σ = 133395839920. Its totient is φ = 133394093460.

The previous prime is 133394966687. The next prime is 133394966711. The reversal of 133394966689 is 986669493331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 133394966689 - 2¹ = 133394966687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133394966681) 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, 140559 + ... + 535300.

It is an arithmetic number, because the mean of its divisors is an integer number (33348959980).

Almost surely, 2^133394966689 is an apocalyptic number.

It is an amenable number.

133394966689 is a deficient number, since it is larger than the sum of its proper divisors (873231).

133394966689 is an equidigital number, since it uses as much as digits as its factorization.

133394966689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873230.

The product of its digits is 136048896, while the sum is 67.

The spelling of 133394966689 in words is "one hundred thirty-three billion, three hundred ninety-four million, nine hundred sixty-six thousand, six hundred eighty-nine".