11477974455 has 16 divisors (see below), whose sum is σ = 20405288160. Its totient is φ = 6121586304.

The previous prime is 11477974399. The next prime is 11477974483. The reversal of 11477974455 is 55447977411.

11477974455 is a `hidden beast` number, since 11 + 47 + 79 + 74 + 455 = 666.

It is not a de Polignac number, because 11477974455 - 2¹⁷ = 11477843383 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42510882 + ... + 42511151.

It is an arithmetic number, because the mean of its divisors is an integer number (1275330510).

Almost surely, 2^11477974455 is an apocalyptic number.

11477974455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11477974455 is a deficient number, since it is larger than the sum of its proper divisors (8927313705).

11477974455 is an equidigital number, since it uses as much as digits as its factorization.

11477974455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85022047 (or 85022041 counting only the distinct ones).

The product of its digits is 4939200, while the sum is 54.

The spelling of 11477974455 in words is "eleven billion, four hundred seventy-seven million, nine hundred seventy-four thousand, four hundred fifty-five".