201823135967 has 16 divisors (see below), whose sum is σ = 203438407680. Its totient is φ = 200215984128.

The previous prime is 201823135961. The next prime is 201823135979. The reversal of 201823135967 is 769531328102.

It is a cyclic number.

It is not a de Polignac number, because 201823135967 - 2¹⁰ = 201823134943 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 (201823135961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135724298 + ... + 135725784.

It is an arithmetic number, because the mean of its divisors is an integer number (12714900480).

Almost surely, 2^201823135967 is an apocalyptic number.

201823135967 is a deficient number, since it is larger than the sum of its proper divisors (1615271713).

201823135967 is a wasteful number, since it uses less digits than its factorization.

201823135967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3550.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 201823135967 in words is "two hundred one billion, eight hundred twenty-three million, one hundred thirty-five thousand, nine hundred sixty-seven".