20067440137 has 2 divisors, whose sum is σ = 20067440138. Its totient is φ = 20067440136.

The previous prime is 20067440123. The next prime is 20067440171. The reversal of 20067440137 is 73104476002.

It is an a-pointer prime, because the next prime (20067440171) can be obtained adding 20067440137 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17791291456 + 2276148681 = 133384^2 + 47709^2 .

It is a cyclic number.

It is not a de Polignac number, because 20067440137 - 2¹⁵ = 20067407369 is a prime.

It is not a weakly prime, because it can be changed into another prime (20067440737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10033720068 + 10033720069.

It is an arithmetic number, because the mean of its divisors is an integer number (10033720069).

Almost surely, 2^20067440137 is an apocalyptic number.

It is an amenable number.

20067440137 is a deficient number, since it is larger than the sum of its proper divisors (1).

20067440137 is an equidigital number, since it uses as much as digits as its factorization.

20067440137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 34.

The spelling of 20067440137 in words is "twenty billion, sixty-seven million, four hundred forty thousand, one hundred thirty-seven".