21316644610334 has 16 divisors (see below), whose sum is σ = 32365869269328. Its totient is φ = 10528066455552.

The previous prime is 21316644610297. The next prime is 21316644610361. The reversal of 21316644610334 is 43301644661312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10281827 + ... + 12179870.

It is an arithmetic number, because the mean of its divisors is an integer number (2022866829333).

Almost surely, 2^{21316644610334} is an apocalyptic number.

21316644610334 is a deficient number, since it is larger than the sum of its proper divisors (11049224658994).

21316644610334 is a wasteful number, since it uses less digits than its factorization.

21316644610334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22467499.

The product of its (nonzero) digits is 746496, while the sum is 44.

The spelling of 21316644610334 in words is "twenty-one trillion, three hundred sixteen billion, six hundred forty-four million, six hundred ten thousand, three hundred thirty-four".