11657657408 has 28 divisors (see below), whose sum is σ = 23625364992. Its totient is φ = 5704809600.

The previous prime is 11657657359. The next prime is 11657657411. The reversal of 11657657408 is 80475675611.

It is a happy number.

11657657408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 in 3 ways as a sum of consecutive naturals, for example, 1934768 + ... + 1940783.

Almost surely, 2^11657657408 is an apocalyptic number.

It is an amenable number.

11657657408 is an abundant number, since it is smaller than the sum of its proper divisors (11967707584).

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

11657657408 is an equidigital number, since it uses as much as digits as its factorization.

11657657408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3875610 (or 3875600 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 50.

The spelling of 11657657408 in words is "eleven billion, six hundred fifty-seven million, six hundred fifty-seven thousand, four hundred eight".