11528434578 has 48 divisors (see below), whose sum is σ = 24442883136. Its totient is φ = 3623891040.

The previous prime is 11528434573. The next prime is 11528434607. The reversal of 11528434578 is 87543482511.

11528434578 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11528434573) 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 23 ways as a sum of consecutive naturals, for example, 199776 + ... + 250932.

It is an arithmetic number, because the mean of its divisors is an integer number (509226732).

Almost surely, 2^11528434578 is an apocalyptic number.

11528434578 is an abundant number, since it is smaller than the sum of its proper divisors (12914448558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11528434578 is a wasteful number, since it uses less digits than its factorization.

11528434578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51279 (or 51256 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 48.

The spelling of 11528434578 in words is "eleven billion, five hundred twenty-eight million, four hundred thirty-four thousand, five hundred seventy-eight".