16364440123236 has 72 divisors (see below), whose sum is σ = 41797084473144. Its totient is φ = 5397979814400.

The previous prime is 16364440123193. The next prime is 16364440123243. The reversal of 16364440123236 is 63232104446361.

It is a happy number.

16364440123236 is a `hidden beast` number, since 1 + 6 + 3 + 6 + 4 + 4 + 401 + 2 + 3 + 236 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6013137708900 + 10351302414336 = 2452170^2 + 3217344^2 .

It is a super-2 number, since 2×16364440123236² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16364440123191 and 16364440123200.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5779330 + ... + 8132006.

It is an arithmetic number, because the mean of its divisors is an integer number (580515062127).

Almost surely, 2^{16364440123236} is an apocalyptic number.

It is an amenable number.

16364440123236 is an abundant number, since it is smaller than the sum of its proper divisors (25432644349908).

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

16364440123236 is a wasteful number, since it uses less digits than its factorization.

16364440123236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2354701 (or 2354696 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 45.

Adding to 16364440123236 its reverse (63232104446361), we get a palindrome (79596544569597).

The spelling of 16364440123236 in words is "sixteen trillion, three hundred sixty-four billion, four hundred forty million, one hundred twenty-three thousand, two hundred thirty-six".