11854494571 has 2 divisors, whose sum is σ = 11854494572. Its totient is φ = 11854494570.

The previous prime is 11854494569. The next prime is 11854494661. The reversal of 11854494571 is 17549445811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11854494571 - 2¹ = 11854494569 is a prime.

Together with 11854494569, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11854494521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5927247285 + 5927247286.

It is an arithmetic number, because the mean of its divisors is an integer number (5927247286).

Almost surely, 2^11854494571 is an apocalyptic number.

11854494571 is a deficient number, since it is larger than the sum of its proper divisors (1).

11854494571 is an equidigital number, since it uses as much as digits as its factorization.

11854494571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 806400, while the sum is 49.

The spelling of 11854494571 in words is "eleven billion, eight hundred fifty-four million, four hundred ninety-four thousand, five hundred seventy-one".