136672765637 has 2 divisors, whose sum is σ = 136672765638. Its totient is φ = 136672765636.

The previous prime is 136672765597. The next prime is 136672765639. The reversal of 136672765637 is 736567276631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134365500481 + 2307265156 = 366559^2 + 48034^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136672765637 is a prime.

Together with 136672765639, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136672765639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68336382818 + 68336382819.

It is an arithmetic number, because the mean of its divisors is an integer number (68336382819).

Almost surely, 2^136672765637 is an apocalyptic number.

It is an amenable number.

136672765637 is a deficient number, since it is larger than the sum of its proper divisors (1).

136672765637 is an equidigital number, since it uses as much as digits as its factorization.

136672765637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40007520, while the sum is 59.

The spelling of 136672765637 in words is "one hundred thirty-six billion, six hundred seventy-two million, seven hundred sixty-five thousand, six hundred thirty-seven".