133385109056639 has 4 divisors (see below), whose sum is σ = 145511028061800. Its totient is φ = 121259190051480.

The previous prime is 133385109056627. The next prime is 133385109056659. The reversal of 133385109056639 is 936650901583331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133385109056639 - 2¹² = 133385109052543 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 (133385109056659) 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, 6062959502564 + ... + 6062959502585.

It is an arithmetic number, because the mean of its divisors is an integer number (36377757015450).

Almost surely, 2^{133385109056639} is an apocalyptic number.

133385109056639 is a deficient number, since it is larger than the sum of its proper divisors (12125919005161).

133385109056639 is a wasteful number, since it uses less digits than its factorization.

133385109056639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12125919005160.

The product of its (nonzero) digits is 47239200, while the sum is 62.

The spelling of 133385109056639 in words is "one hundred thirty-three trillion, three hundred eighty-five billion, one hundred nine million, fifty-six thousand, six hundred thirty-nine".