21116605652326 has 8 divisors (see below), whose sum is σ = 32272548261264. Its totient is φ = 10359089565240.

The previous prime is 21116605652293. The next prime is 21116605652327. The reversal of 21116605652326 is 62325650661112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21116605652326² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21116605652327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99606630330 + ... + 99606630541.

It is an arithmetic number, because the mean of its divisors is an integer number (4034068532658).

Almost surely, 2^{21116605652326} is an apocalyptic number.

21116605652326 is a deficient number, since it is larger than the sum of its proper divisors (11155942608938).

21116605652326 is a wasteful number, since it uses less digits than its factorization.

21116605652326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199213260926.

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 21116605652326 in words is "twenty-one trillion, one hundred sixteen billion, six hundred five million, six hundred fifty-two thousand, three hundred twenty-six".