11591632987 has 8 divisors (see below), whose sum is σ = 12775784112. Its totient is φ = 10429209600.

The previous prime is 11591632981. The next prime is 11591633017. The reversal of 11591632987 is 78923619511.

11591632987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11591632987 - 2⁷ = 11591632859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11591632981) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 5430814 + ... + 5432947.

It is an arithmetic number, because the mean of its divisors is an integer number (1596973014).

Almost surely, 2^11591632987 is an apocalyptic number.

11591632987 is a deficient number, since it is larger than the sum of its proper divisors (1184151125).

11591632987 is a wasteful number, since it uses less digits than its factorization.

11591632987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10863869.

The product of its digits is 816480, while the sum is 52.

The spelling of 11591632987 in words is "eleven billion, five hundred ninety-one million, six hundred thirty-two thousand, nine hundred eighty-seven".