21163533146216 has 32 divisors (see below), whose sum is σ = 40320882613440. Its totient is φ = 10411666370688.

The previous prime is 21163533146167. The next prime is 21163533146263. The reversal of 21163533146216 is 61264133536112.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22576940 + ... + 23495643.

It is an arithmetic number, because the mean of its divisors is an integer number (1260027581670).

Almost surely, 2^{21163533146216} is an apocalyptic number.

It is an amenable number.

21163533146216 is a deficient number, since it is larger than the sum of its proper divisors (19157349467224).

21163533146216 is a wasteful number, since it uses less digits than its factorization.

21163533146216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46073513 (or 46073509 counting only the distinct ones).

The product of its digits is 466560, while the sum is 44.

The spelling of 21163533146216 in words is "twenty-one trillion, one hundred sixty-three billion, five hundred thirty-three million, one hundred forty-six thousand, two hundred sixteen".