11631528158 has 4 divisors (see below), whose sum is σ = 17447292240. Its totient is φ = 5815764078.

The previous prime is 11631528149. The next prime is 11631528179. The reversal of 11631528158 is 85182513611.

11631528158 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2907882038 + ... + 2907882041.

It is an arithmetic number, because the mean of its divisors is an integer number (4361823060).

Almost surely, 2^11631528158 is an apocalyptic number.

11631528158 is a deficient number, since it is larger than the sum of its proper divisors (5815764082).

11631528158 is an equidigital number, since it uses as much as digits as its factorization.

11631528158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5815764081.

The product of its digits is 57600, while the sum is 41.

The spelling of 11631528158 in words is "eleven billion, six hundred thirty-one million, five hundred twenty-eight thousand, one hundred fifty-eight".