137643505211 has 4 divisors (see below), whose sum is σ = 137657091000. Its totient is φ = 137629919424.

The previous prime is 137643505189. The next prime is 137643505231. The reversal of 137643505211 is 112505346731.

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 137643505211 - 2⁶ = 137643505147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137643505231) 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, 6777686 + ... + 6797963.

It is an arithmetic number, because the mean of its divisors is an integer number (34414272750).

Almost surely, 2^137643505211 is an apocalyptic number.

137643505211 is a deficient number, since it is larger than the sum of its proper divisors (13585789).

137643505211 is a wasteful number, since it uses less digits than its factorization.

137643505211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13585788.

The product of its (nonzero) digits is 75600, while the sum is 38.

The spelling of 137643505211 in words is "one hundred thirty-seven billion, six hundred forty-three million, five hundred five thousand, two hundred eleven".