11719721471 has 2 divisors, whose sum is σ = 11719721472. Its totient is φ = 11719721470.

The previous prime is 11719721389. The next prime is 11719721479. The reversal of 11719721471 is 17412791711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11719721471 - 2¹⁰ = 11719720447 is a prime.

It is a super-3 number, since 3×11719721471³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11719721479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5859860735 + 5859860736.

It is an arithmetic number, because the mean of its divisors is an integer number (5859860736).

Almost surely, 2^11719721471 is an apocalyptic number.

11719721471 is a deficient number, since it is larger than the sum of its proper divisors (1).

11719721471 is an equidigital number, since it uses as much as digits as its factorization.

11719721471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24696, while the sum is 41.

The spelling of 11719721471 in words is "eleven billion, seven hundred nineteen million, seven hundred twenty-one thousand, four hundred seventy-one".