11520134451 has 12 divisors (see below), whose sum is σ = 19017364912. Its totient is φ = 6582933936.

The previous prime is 11520134419. The next prime is 11520134459. The reversal of 11520134451 is 15443102511.

11520134451 is a `hidden beast` number, since 1 + 1 + 5 + 201 + 3 + 4 + 451 = 666.

It is not a de Polignac number, because 11520134451 - 2⁵ = 11520134419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11520134459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91429576 + ... + 91429701.

Almost surely, 2^11520134451 is an apocalyptic number.

11520134451 is a deficient number, since it is larger than the sum of its proper divisors (7497230461).

11520134451 is a wasteful number, since it uses less digits than its factorization.

11520134451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182859290 (or 182859287 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 11520134451 its reverse (15443102511), we get a palindrome (26963236962).

The spelling of 11520134451 in words is "eleven billion, five hundred twenty million, one hundred thirty-four thousand, four hundred fifty-one".