21336602152336 has 15 divisors (see below), whose sum is σ = 41339702468641. Its totient is φ = 10668291837856.

The previous prime is 21336602152319. The next prime is 21336602152363. The reversal of 21336602152336 is 63325120663312.

The square root of 21336602152336 is 4619156.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 12543242222736 + 8793359929600 = 3541644^2 + 2965360^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21336602152292 and 21336602152301.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 17899230 + ... + 19054018.

Almost surely, 2^{21336602152336} is an apocalyptic number.

21336602152336 is the 4619156-th square number.

It is an amenable number.

21336602152336 is a deficient number, since it is larger than the sum of its proper divisors (20003100316305).

21336602152336 is an frugal number, since it uses more digits than its factorization.

21336602152336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2309586 (or 1154791 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 43.

The spelling of 21336602152336 in words is "twenty-one trillion, three hundred thirty-six billion, six hundred two million, one hundred fifty-two thousand, three hundred thirty-six".