11228181378 has 32 divisors (see below), whose sum is σ = 22721040000. Its totient is φ = 3698868096.

The previous prime is 11228181317. The next prime is 11228181389. The reversal of 11228181378 is 87318182211.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146350 + ... + 209462.

It is an arithmetic number, because the mean of its divisors is an integer number (710032500).

Almost surely, 2^11228181378 is an apocalyptic number.

11228181378 is an abundant number, since it is smaller than the sum of its proper divisors (11492858622).

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

11228181378 is a wasteful number, since it uses less digits than its factorization.

11228181378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63466.

The product of its digits is 43008, while the sum is 42.

The spelling of 11228181378 in words is "eleven billion, two hundred twenty-eight million, one hundred eighty-one thousand, three hundred seventy-eight".