11771481394 has 8 divisors (see below), whose sum is σ = 18695882268. Its totient is φ = 5539520640.

The previous prime is 11771481389. The next prime is 11771481431. The reversal of 11771481394 is 49318417711.

11771481394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9679608225 + 2091873169 = 98385^2 + 45737^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173109987 + ... + 173110054.

Almost surely, 2^11771481394 is an apocalyptic number.

11771481394 is a deficient number, since it is larger than the sum of its proper divisors (6924400874).

11771481394 is a wasteful number, since it uses less digits than its factorization.

11771481394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346220060.

The product of its digits is 169344, while the sum is 46.

The spelling of 11771481394 in words is "eleven billion, seven hundred seventy-one million, four hundred eighty-one thousand, three hundred ninety-four".