11813066516 has 12 divisors (see below), whose sum is σ = 21231592788. Its totient is φ = 5746897152.

The previous prime is 11813066497. The next prime is 11813066519. The reversal of 11813066516 is 61566031811.

It can be written as a sum of positive squares in 2 ways, for example, as 5364976516 + 6448090000 = 73246^2 + 80300^2 .

It is a super-2 number, since 2×11813066516² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11813066516.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11813066519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39908861 + ... + 39909156.

It is an arithmetic number, because the mean of its divisors is an integer number (1769299399).

Almost surely, 2^11813066516 is an apocalyptic number.

It is an amenable number.

11813066516 is a deficient number, since it is larger than the sum of its proper divisors (9418526272).

11813066516 is a wasteful number, since it uses less digits than its factorization.

11813066516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79818058 (or 79818056 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 38.

The spelling of 11813066516 in words is "eleven billion, eight hundred thirteen million, sixty-six thousand, five hundred sixteen".