11778423579 has 72 divisors (see below), whose sum is σ = 19565582400. Its totient is φ = 6783929856.

The previous prime is 11778423563. The next prime is 11778423583. The reversal of 11778423579 is 97532487711.

It is not a de Polignac number, because 11778423579 - 2⁴ = 11778423563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11778423079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2906947 + ... + 2910995.

It is an arithmetic number, because the mean of its divisors is an integer number (271744200).

Almost surely, 2^11778423579 is an apocalyptic number.

11778423579 is a deficient number, since it is larger than the sum of its proper divisors (7787158821).

11778423579 is a wasteful number, since it uses less digits than its factorization.

11778423579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4161 (or 4135 counting only the distinct ones).

The product of its digits is 2963520, while the sum is 54.

The spelling of 11778423579 in words is "eleven billion, seven hundred seventy-eight million, four hundred twenty-three thousand, five hundred seventy-nine".