21516352200315 has 32 divisors (see below), whose sum is σ = 43715763202560. Its totient is φ = 9836046719712.

The previous prime is 21516352200281. The next prime is 21516352200323. The reversal of 21516352200315 is 51300225361512.

21516352200315 is a `hidden beast` number, since 2 + 1 + 5 + 1 + 635 + 2 + 2 + 0 + 0 + 3 + 15 = 666.

It is not a de Polignac number, because 21516352200315 - 2¹³ = 21516352192123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21516352200315.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11384312389 + ... + 11384314278.

It is an arithmetic number, because the mean of its divisors is an integer number (1366117600080).

Almost surely, 2^{21516352200315} is an apocalyptic number.

21516352200315 is an abundant number, since it is smaller than the sum of its proper divisors (22199411002245).

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

21516352200315 is a wasteful number, since it uses less digits than its factorization.

21516352200315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22768626688 (or 22768626682 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

Adding to 21516352200315 its reverse (51300225361512), we get a palindrome (72816577561827).

The spelling of 21516352200315 in words is "twenty-one trillion, five hundred sixteen billion, three hundred fifty-two million, two hundred thousand, three hundred fifteen".