11723515556 has 24 divisors (see below), whose sum is σ = 20597017056. Its totient is φ = 5838687360.

The previous prime is 11723515543. The next prime is 11723515589. The reversal of 11723515556 is 65551532711.

11723515556 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 7 ways as a sum of consecutive naturals, for example, 1713815 + ... + 1720641.

It is an arithmetic number, because the mean of its divisors is an integer number (858209044).

Almost surely, 2^11723515556 is an apocalyptic number.

It is an amenable number.

11723515556 is a deficient number, since it is larger than the sum of its proper divisors (8873501500).

11723515556 is a wasteful number, since it uses less digits than its factorization.

11723515556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8459 (or 8457 counting only the distinct ones).

The product of its digits is 157500, while the sum is 41.

The spelling of 11723515556 in words is "eleven billion, seven hundred twenty-three million, five hundred fifteen thousand, five hundred fifty-six".