11511578853 has 48 divisors (see below), whose sum is σ = 17245073664. Its totient is φ = 7395598080.

The previous prime is 11511578839. The next prime is 11511578857. The reversal of 11511578853 is 35887511511.

11511578853 is a `hidden beast` number, since 1 + 1 + 511 + 5 + 7 + 88 + 53 = 666.

It is not a de Polignac number, because 11511578853 - 2⁶ = 11511578789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11511578799 and 11511578808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11511578857) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10828800 + ... + 10829862.

It is an arithmetic number, because the mean of its divisors is an integer number (359272368).

Almost surely, 2^11511578853 is an apocalyptic number.

It is an amenable number.

11511578853 is a deficient number, since it is larger than the sum of its proper divisors (5733494811).

11511578853 is a wasteful number, since it uses less digits than its factorization.

11511578853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506 (or 1503 counting only the distinct ones).

The product of its digits is 168000, while the sum is 45.

The spelling of 11511578853 in words is "eleven billion, five hundred eleven million, five hundred seventy-eight thousand, eight hundred fifty-three".