11534551011 has 16 divisors (see below), whose sum is σ = 17212960800. Its totient is φ = 7633569024.

The previous prime is 11534550997. The next prime is 11534551043. The reversal of 11534551011 is 11015543511.

11534551011 is a `hidden beast` number, since 115 + 34 + 5 + 510 + 1 + 1 = 666.

It is not a de Polignac number, because 11534551011 - 2⁶ = 11534550947 is a prime.

It is a super-2 number, since 2×11534551011² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (11534551081) 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 15 ways as a sum of consecutive naturals, for example, 1555446 + ... + 1562843.

It is an arithmetic number, because the mean of its divisors is an integer number (1075810050).

Almost surely, 2^11534551011 is an apocalyptic number.

11534551011 is a deficient number, since it is larger than the sum of its proper divisors (5678409789).

11534551011 is a wasteful number, since it uses less digits than its factorization.

11534551011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3118435 (or 3118429 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 27.

The spelling of 11534551011 in words is "eleven billion, five hundred thirty-four million, five hundred fifty-one thousand, eleven".