11555116471 has 2 divisors, whose sum is σ = 11555116472. Its totient is φ = 11555116470.

The previous prime is 11555116453. The next prime is 11555116523. The reversal of 11555116471 is 17461155511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11555116471 - 2⁷ = 11555116343 is a prime.

It is a super-4 number, since 4×11555116471⁴ (a number of 41 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a self number, because there is not a number n which added to its sum of digits gives 11555116471.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11555116451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5777558235 + 5777558236.

It is an arithmetic number, because the mean of its divisors is an integer number (5777558236).

Almost surely, 2^11555116471 is an apocalyptic number.

11555116471 is a deficient number, since it is larger than the sum of its proper divisors (1).

11555116471 is an equidigital number, since it uses as much as digits as its factorization.

11555116471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21000, while the sum is 37.

The spelling of 11555116471 in words is "eleven billion, five hundred fifty-five million, one hundred sixteen thousand, four hundred seventy-one".