11719953647 has 2 divisors, whose sum is σ = 11719953648. Its totient is φ = 11719953646.

The previous prime is 11719953613. The next prime is 11719953667. The reversal of 11719953647 is 74635991711.

It is a strong prime.

It is an emirp because it is prime and its reverse (74635991711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11719953647 - 2¹⁴ = 11719937263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11719953667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5859976823 + 5859976824.

It is an arithmetic number, because the mean of its divisors is an integer number (5859976824).

Almost surely, 2^11719953647 is an apocalyptic number.

11719953647 is a deficient number, since it is larger than the sum of its proper divisors (1).

11719953647 is an equidigital number, since it uses as much as digits as its factorization.

11719953647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1428840, while the sum is 53.

The spelling of 11719953647 in words is "eleven billion, seven hundred nineteen million, nine hundred fifty-three thousand, six hundred forty-seven".