11719281378 has 16 divisors (see below), whose sum is σ = 26786928960. Its totient is φ = 3348366096.

The previous prime is 11719281337. The next prime is 11719281397. The reversal of 11719281378 is 87318291711.

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, 139515213 + ... + 139515296.

It is an arithmetic number, because the mean of its divisors is an integer number (1674183060).

Almost surely, 2^11719281378 is an apocalyptic number.

11719281378 is an abundant number, since it is smaller than the sum of its proper divisors (15067647582).

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

11719281378 is a wasteful number, since it uses less digits than its factorization.

11719281378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279030521.

The product of its digits is 169344, while the sum is 48.

The spelling of 11719281378 in words is "eleven billion, seven hundred nineteen million, two hundred eighty-one thousand, three hundred seventy-eight".