11581634672 has 10 divisors (see below), whose sum is σ = 22439417208. Its totient is φ = 5790817328.

The previous prime is 11581634671. The next prime is 11581634681. The reversal of 11581634672 is 27643618511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11581634671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 361926068 + ... + 361926099.

Almost surely, 2^11581634672 is an apocalyptic number.

It is an amenable number.

11581634672 is a deficient number, since it is larger than the sum of its proper divisors (10857782536).

11581634672 is an equidigital number, since it uses as much as digits as its factorization.

11581634672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723852175 (or 723852169 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The spelling of 11581634672 in words is "eleven billion, five hundred eighty-one million, six hundred thirty-four thousand, six hundred seventy-two".