20343654412216 has 8 divisors (see below), whose sum is σ = 38144352022920. Its totient is φ = 10171827206104.

The previous prime is 20343654412189. The next prime is 20343654412231. The reversal of 20343654412216 is 61221445634302.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent 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 as a sum of consecutive naturals, namely, 1271478400756 + ... + 1271478400771.

It is an arithmetic number, because the mean of its divisors is an integer number (4768044002865).

Almost surely, 2^{20343654412216} is an apocalyptic number.

It is an amenable number.

20343654412216 is a deficient number, since it is larger than the sum of its proper divisors (17800697610704).

20343654412216 is a wasteful number, since it uses less digits than its factorization.

20343654412216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2542956801533 (or 2542956801529 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 20343654412216 in words is "twenty trillion, three hundred forty-three billion, six hundred fifty-four million, four hundred twelve thousand, two hundred sixteen".