11966780078 has 16 divisors (see below), whose sum is σ = 20433396096. Its totient is φ = 5202947640.

The previous prime is 11966780069. The next prime is 11966780083. The reversal of 11966780078 is 87008766911.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11824376 + ... + 11825387.

It is an arithmetic number, because the mean of its divisors is an integer number (1277087256).

Almost surely, 2^11966780078 is an apocalyptic number.

11966780078 is a deficient number, since it is larger than the sum of its proper divisors (8466616018).

11966780078 is a wasteful number, since it uses less digits than its factorization.

11966780078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23649799.

The product of its (nonzero) digits is 1016064, while the sum is 53.

The spelling of 11966780078 in words is "eleven billion, nine hundred sixty-six million, seven hundred eighty thousand, seventy-eight".