11878720688704 has 21 divisors (see below), whose sum is σ = 23571891080787. Its totient is φ = 5939346558144.

The previous prime is 11878720688693. The next prime is 11878720688711. The reversal of 11878720688704 is 40788602787811.

The square root of 11878720688704 is 3446552.

It is a perfect power (a square), and thus also a powerful number.

11878720688704 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11878720688704² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11878720688704.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 27357007 + ... + 27787825.

It is an arithmetic number, because the mean of its divisors is an integer number (1122471003847).

Almost surely, 2^{11878720688704} is an apocalyptic number.

11878720688704 is the 3446552-nd square number.

It is an amenable number.

11878720688704 is a deficient number, since it is larger than the sum of its proper divisors (11693170392083).

11878720688704 is an frugal number, since it uses more digits than its factorization.

11878720688704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861650 (or 430821 counting only the distinct ones).

The product of its (nonzero) digits is 67436544, while the sum is 67.

The spelling of 11878720688704 in words is "eleven trillion, eight hundred seventy-eight billion, seven hundred twenty million, six hundred eighty-eight thousand, seven hundred four".