11808672534 has 32 divisors (see below), whose sum is σ = 26354147040. Its totient is φ = 3919326336.

The previous prime is 11808672511. The next prime is 11808672553. The reversal of 11808672534 is 43527680811.

It is a self number, because there is not a number n which added to its sum of digits gives 11808672534.

It is a congruent number.

It is an unprimeable number.

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, 456687 + ... + 481850.

It is an arithmetic number, because the mean of its divisors is an integer number (823567095).

Almost surely, 2^11808672534 is an apocalyptic number.

11808672534 is an abundant number, since it is smaller than the sum of its proper divisors (14545474506).

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

11808672534 is a wasteful number, since it uses less digits than its factorization.

11808672534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938781 (or 938775 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 11808672534 in words is "eleven billion, eight hundred eight million, six hundred seventy-two thousand, five hundred thirty-four".