11433878456 has 128 divisors (see below), whose sum is σ = 29180390400. Its totient is φ = 4055546880.

The previous prime is 11433878441. The next prime is 11433878461. The reversal of 11433878456 is 65487833411.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 574805 + ... + 594363.

It is an arithmetic number, because the mean of its divisors is an integer number (227971800).

Almost surely, 2^11433878456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11433878456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14590195200).

11433878456 is an abundant number, since it is smaller than the sum of its proper divisors (17746511944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11433878456 is a wasteful number, since it uses less digits than its factorization.

11433878456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19669 (or 19665 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 50.

The spelling of 11433878456 in words is "eleven billion, four hundred thirty-three million, eight hundred seventy-eight thousand, four hundred fifty-six".