11433978863 has 4 divisors (see below), whose sum is σ = 11462492928. Its totient is φ = 11405464800.

The previous prime is 11433978827. The next prime is 11433978893. The reversal of 11433978863 is 36887933411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36887933411 = 7 ⋅5269704773.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11433978863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11433978893) 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 3 ways as a sum of consecutive naturals, for example, 14256431 + ... + 14257232.

It is an arithmetic number, because the mean of its divisors is an integer number (2865623232).

Almost surely, 2^11433978863 is an apocalyptic number.

11433978863 is a deficient number, since it is larger than the sum of its proper divisors (28514065).

11433978863 is an equidigital number, since it uses as much as digits as its factorization.

11433978863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28514064.

The product of its digits is 2612736, while the sum is 53.

The spelling of 11433978863 in words is "eleven billion, four hundred thirty-three million, nine hundred seventy-eight thousand, eight hundred sixty-three".