11911177471 has 2 divisors, whose sum is σ = 11911177472. Its totient is φ = 11911177470.

The previous prime is 11911177459. The next prime is 11911177477. The reversal of 11911177471 is 17477111911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11911177471 - 2²⁷ = 11776959743 is a prime.

It is a super-3 number, since 3×11911177471³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11911177477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5955588735 + 5955588736.

It is an arithmetic number, because the mean of its divisors is an integer number (5955588736).

Almost surely, 2^11911177471 is an apocalyptic number.

11911177471 is a deficient number, since it is larger than the sum of its proper divisors (1).

11911177471 is an equidigital number, since it uses as much as digits as its factorization.

11911177471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12348, while the sum is 40.

The spelling of 11911177471 in words is "eleven billion, nine hundred eleven million, one hundred seventy-seven thousand, four hundred seventy-one".