11739723129217 has 2 divisors, whose sum is σ = 11739723129218. Its totient is φ = 11739723129216.

The previous prime is 11739723129179. The next prime is 11739723129241. The reversal of 11739723129217 is 71292132793711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6950821146481 + 4788901982736 = 2636441^2 + 2188356^2 .

It is an emirp because it is prime and its reverse (71292132793711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11739723129217 - 2²³ = 11739714740609 is a prime.

It is not a weakly prime, because it can be changed into another prime (11739723129287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5869861564608 + 5869861564609.

It is an arithmetic number, because the mean of its divisors is an integer number (5869861564609).

Almost surely, 2^{11739723129217} is an apocalyptic number.

It is an amenable number.

11739723129217 is a deficient number, since it is larger than the sum of its proper divisors (1).

11739723129217 is an equidigital number, since it uses as much as digits as its factorization.

11739723129217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2000376, while the sum is 55.

The spelling of 11739723129217 in words is "eleven trillion, seven hundred thirty-nine billion, seven hundred twenty-three million, one hundred twenty-nine thousand, two hundred seventeen".