11778535485 has 16 divisors (see below), whose sum is σ = 20939618880. Its totient is φ = 6281885520.

The previous prime is 11778535481. The next prime is 11778535501. The reversal of 11778535485 is 58453587711.

11778535485 is a `hidden beast` number, since 1 + 17 + 7 + 85 + 3 + 548 + 5 = 666.

11778535485 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11778535485 - 2² = 11778535481 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11778535481) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 43624071 + ... + 43624340.

It is an arithmetic number, because the mean of its divisors is an integer number (1308726180).

Almost surely, 2^11778535485 is an apocalyptic number.

11778535485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11778535485 is a deficient number, since it is larger than the sum of its proper divisors (9161083395).

11778535485 is an equidigital number, since it uses as much as digits as its factorization.

11778535485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87248425 (or 87248419 counting only the distinct ones).

The product of its digits is 4704000, while the sum is 54.

The spelling of 11778535485 in words is "eleven billion, seven hundred seventy-eight million, five hundred thirty-five thousand, four hundred eighty-five".