136683576989 has 2 divisors, whose sum is σ = 136683576990. Its totient is φ = 136683576988.

The previous prime is 136683576983. The next prime is 136683577049. The reversal of 136683576989 is 989675386631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109637143225 + 27046433764 = 331115^2 + 164458^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136683576989 is a prime.

It is a super-2 number, since 2×136683576989² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136683576983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68341788494 + 68341788495.

It is an arithmetic number, because the mean of its divisors is an integer number (68341788495).

Almost surely, 2^136683576989 is an apocalyptic number.

It is an amenable number.

136683576989 is a deficient number, since it is larger than the sum of its proper divisors (1).

136683576989 is an equidigital number, since it uses as much as digits as its factorization.

136683576989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 352719360, while the sum is 71.

The spelling of 136683576989 in words is "one hundred thirty-six billion, six hundred eighty-three million, five hundred seventy-six thousand, nine hundred eighty-nine".