11521924204816 has 15 divisors (see below), whose sum is σ = 22323754453431. Its totient is φ = 5760955313616.

The previous prime is 11521924204789. The next prime is 11521924204837. The reversal of 11521924204816 is 61840242912511.

The square root of 11521924204816 is 3394396.

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

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 13153285 + ... + 14001883.

Almost surely, 2^{11521924204816} is an apocalyptic number.

11521924204816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

11521924204816 is the 3394396-th square number.

It is an amenable number.

11521924204816 is a deficient number, since it is larger than the sum of its proper divisors (10801830248615).

11521924204816 is an frugal number, since it uses more digits than its factorization.

11521924204816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697206 (or 848601 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 46.

The spelling of 11521924204816 in words is "eleven trillion, five hundred twenty-one billion, nine hundred twenty-four million, two hundred four thousand, eight hundred sixteen".