236139642329 has 4 divisors (see below), whose sum is σ = 236275904676. Its totient is φ = 236003379984.

The previous prime is 236139642257. The next prime is 236139642331. The reversal of 236139642329 is 923246931632.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 187422323929 + 48717318400 = 432923^2 + 220720^2 .

It is a cyclic number.

It is not a de Polignac number, because 236139642329 - 2⁸ = 236139642073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (236139662329) 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, 68128574 + ... + 68132039.

It is an arithmetic number, because the mean of its divisors is an integer number (59068976169).

Almost surely, 2^236139642329 is an apocalyptic number.

It is an amenable number.

236139642329 is a deficient number, since it is larger than the sum of its proper divisors (136262347).

236139642329 is a wasteful number, since it uses less digits than its factorization.

236139642329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136262346.

The product of its digits is 2519424, while the sum is 50.

The spelling of 236139642329 in words is "two hundred thirty-six billion, one hundred thirty-nine million, six hundred forty-two thousand, three hundred twenty-nine".