11734215709 has 2 divisors, whose sum is σ = 11734215710. Its totient is φ = 11734215708.

The previous prime is 11734215637. The next prime is 11734215749. The reversal of 11734215709 is 90751243711.

It is a happy number.

It is an a-pointer prime, because the next prime (11734215749) can be obtained adding 11734215709 to its sum of digits (40).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7708313209 + 4025902500 = 87797^2 + 63450^2 .

It is a cyclic number.

It is not a de Polignac number, because 11734215709 - 2¹¹ = 11734213661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11734215749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5867107854 + 5867107855.

It is an arithmetic number, because the mean of its divisors is an integer number (5867107855).

Almost surely, 2^11734215709 is an apocalyptic number.

It is an amenable number.

11734215709 is a deficient number, since it is larger than the sum of its proper divisors (1).

11734215709 is an equidigital number, since it uses as much as digits as its factorization.

11734215709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 40.

The spelling of 11734215709 in words is "eleven billion, seven hundred thirty-four million, two hundred fifteen thousand, seven hundred nine".