11338778516 has 24 divisors (see below), whose sum is σ = 21495698280. Its totient is φ = 5233278336.

The previous prime is 11338778513. The next prime is 11338778531. The reversal of 11338778516 is 61587783311.

It can be written as a sum of positive squares in 4 ways, for example, as 7360953616 + 3977824900 = 85796^2 + 63070^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11338778513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 636341 + ... + 653916.

It is an arithmetic number, because the mean of its divisors is an integer number (895654095).

Almost surely, 2^11338778516 is an apocalyptic number.

It is an amenable number.

11338778516 is a deficient number, since it is larger than the sum of its proper divisors (10156919764).

11338778516 is a wasteful number, since it uses less digits than its factorization.

11338778516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290300 (or 1290272 counting only the distinct ones).

The product of its digits is 846720, while the sum is 50.

The spelling of 11338778516 in words is "eleven billion, three hundred thirty-eight million, seven hundred seventy-eight thousand, five hundred sixteen".