136666332135 has 32 divisors (see below), whose sum is σ = 243494124480. Its totient is φ = 72729183744.

The previous prime is 136666332091. The next prime is 136666332139. The reversal of 136666332135 is 531233666631.

It is not a de Polignac number, because 136666332135 - 2¹⁰ = 136666331111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136666332139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1045902 + ... + 1169291.

It is an arithmetic number, because the mean of its divisors is an integer number (7609191390).

Almost surely, 2^136666332135 is an apocalyptic number.

136666332135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

136666332135 is a deficient number, since it is larger than the sum of its proper divisors (106827792345).

136666332135 is a wasteful number, since it uses less digits than its factorization.

136666332135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2215664 (or 2215658 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 45.

Adding to 136666332135 its reverse (531233666631), we get a palindrome (667899998766).

The spelling of 136666332135 in words is "one hundred thirty-six billion, six hundred sixty-six million, three hundred thirty-two thousand, one hundred thirty-five".