11778666051 has 8 divisors (see below), whose sum is σ = 15784609104. Its totient is φ = 7812583520.

The previous prime is 11778666049. The next prime is 11778666077. The reversal of 11778666051 is 15066687711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11778666051 - 2¹ = 11778666049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11778668051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9964440 + ... + 9965621.

It is an arithmetic number, because the mean of its divisors is an integer number (1973076138).

Almost surely, 2^11778666051 is an apocalyptic number.

11778666051 is a deficient number, since it is larger than the sum of its proper divisors (4005943053).

11778666051 is a wasteful number, since it uses less digits than its factorization.

11778666051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19930261.

The product of its (nonzero) digits is 423360, while the sum is 48.

The spelling of 11778666051 in words is "eleven billion, seven hundred seventy-eight million, six hundred sixty-six thousand, fifty-one".