11823728078 has 4 divisors (see below), whose sum is σ = 17735592120. Its totient is φ = 5911864038.

The previous prime is 11823728039. The next prime is 11823728087. The reversal of 11823728078 is 87082732811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87082732811 = 1009 ⋅86305979.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2955932018 + ... + 2955932021.

It is an arithmetic number, because the mean of its divisors is an integer number (4433898030).

Almost surely, 2^11823728078 is an apocalyptic number.

11823728078 is a deficient number, since it is larger than the sum of its proper divisors (5911864042).

11823728078 is an equidigital number, since it uses as much as digits as its factorization.

11823728078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5911864041.

The product of its (nonzero) digits is 301056, while the sum is 47.

The spelling of 11823728078 in words is "eleven billion, eight hundred twenty-three million, seven hundred twenty-eight thousand, seventy-eight".