136200431611111 has 4 divisors (see below), whose sum is σ = 155657636126992. Its totient is φ = 116743227095232.

The previous prime is 136200431611099. The next prime is 136200431611117. The reversal of 136200431611111 is 111116134002631.

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 136200431611111 - 2⁷ = 136200431610983 is a prime.

It is a super-2 number, since 2×136200431611111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136200431611117) 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, 9728602257930 + ... + 9728602257943.

It is an arithmetic number, because the mean of its divisors is an integer number (38914409031748).

Almost surely, 2^{136200431611111} is an apocalyptic number.

136200431611111 is a deficient number, since it is larger than the sum of its proper divisors (19457204515881).

136200431611111 is an equidigital number, since it uses as much as digits as its factorization.

136200431611111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19457204515880.

The product of its (nonzero) digits is 2592, while the sum is 31.

Adding to 136200431611111 its reverse (111116134002631), we get a palindrome (247316565613742).

The spelling of 136200431611111 in words is "one hundred thirty-six trillion, two hundred billion, four hundred thirty-one million, six hundred eleven thousand, one hundred eleven".