136040433237 has 6 divisors (see below), whose sum is σ = 196502848022. Its totient is φ = 90693622152.

The previous prime is 136040433233. The next prime is 136040433239. The reversal of 136040433237 is 732334040631.

136040433237 is a `hidden beast` number, since 1 + 3 + 604 + 0 + 43 + 3 + 2 + 3 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 100168452036 + 35871981201 = 316494^2 + 189399^2 .

It is not a de Polignac number, because 136040433237 - 2² = 136040433233 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 (136040433233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7557801838 + ... + 7557801855.

Almost surely, 2^136040433237 is an apocalyptic number.

It is an amenable number.

136040433237 is a deficient number, since it is larger than the sum of its proper divisors (60462414785).

136040433237 is a wasteful number, since it uses less digits than its factorization.

136040433237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15115603699 (or 15115603696 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 36.

Adding to 136040433237 its reverse (732334040631), we get a palindrome (868374473868).

The spelling of 136040433237 in words is "one hundred thirty-six billion, forty million, four hundred thirty-three thousand, two hundred thirty-seven".