11949547455 has 12 divisors (see below), whose sum is σ = 20712549000. Its totient is φ = 6373091952.

The previous prime is 11949547453. The next prime is 11949547483. The reversal of 11949547455 is 55474594911.

11949547455 is a `hidden beast` number, since 1 + 1 + 9 + 49 + 547 + 4 + 55 = 666.

It is not a de Polignac number, because 11949547455 - 2¹ = 11949547453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11949547453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132772705 + ... + 132772794.

It is an arithmetic number, because the mean of its divisors is an integer number (1726045750).

Almost surely, 2^11949547455 is an apocalyptic number.

11949547455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11949547455 is a deficient number, since it is larger than the sum of its proper divisors (8763001545).

11949547455 is a wasteful number, since it uses less digits than its factorization.

11949547455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265545510 (or 265545507 counting only the distinct ones).

The product of its digits is 4536000, while the sum is 54.

The spelling of 11949547455 in words is "eleven billion, nine hundred forty-nine million, five hundred forty-seven thousand, four hundred fifty-five".