236743137002681 has 2 divisors, whose sum is σ = 236743137002682. Its totient is φ = 236743137002680.

The previous prime is 236743137002639. The next prime is 236743137002693. The reversal of 236743137002681 is 186200731347632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194308126908025 + 42435010094656 = 13939445^2 + 6514216^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-236743137002681 is a prime.

It is a super-2 number, since 2×236743137002681² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (236743137022681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 118371568501340 + 118371568501341.

It is an arithmetic number, because the mean of its divisors is an integer number (118371568501341).

Almost surely, 2^{236743137002681} is an apocalyptic number.

It is an amenable number.

236743137002681 is a deficient number, since it is larger than the sum of its proper divisors (1).

236743137002681 is an equidigital number, since it uses as much as digits as its factorization.

236743137002681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6096384, while the sum is 53.

The spelling of 236743137002681 in words is "two hundred thirty-six trillion, seven hundred forty-three billion, one hundred thirty-seven million, two thousand, six hundred eighty-one".