11443339978 has 16 divisors (see below), whose sum is σ = 19853507520. Its totient is φ = 4845200256.

The previous prime is 11443339949. The next prime is 11443339987. The reversal of 11443339978 is 87993334411.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4922823 + ... + 4925146.

It is an arithmetic number, because the mean of its divisors is an integer number (1240844220).

Almost surely, 2^11443339978 is an apocalyptic number.

11443339978 is a deficient number, since it is larger than the sum of its proper divisors (8410167542).

11443339978 is an equidigital number, since it uses as much as digits as its factorization.

11443339978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9848061.

The product of its digits is 1959552, while the sum is 52.

The spelling of 11443339978 in words is "eleven billion, four hundred forty-three million, three hundred thirty-nine thousand, nine hundred seventy-eight".