11725715647 has 2 divisors, whose sum is σ = 11725715648. Its totient is φ = 11725715646.

The previous prime is 11725715641. The next prime is 11725715719. The reversal of 11725715647 is 74651752711.

It is a weak prime.

It is an emirp because it is prime and its reverse (74651752711) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11725715647 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11725715597 and 11725715606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11725715641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5862857823 + 5862857824.

It is an arithmetic number, because the mean of its divisors is an integer number (5862857824).

Almost surely, 2^11725715647 is an apocalyptic number.

11725715647 is a deficient number, since it is larger than the sum of its proper divisors (1).

11725715647 is an equidigital number, since it uses as much as digits as its factorization.

11725715647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 411600, while the sum is 46.

The spelling of 11725715647 in words is "eleven billion, seven hundred twenty-five million, seven hundred fifteen thousand, six hundred forty-seven".