21164012026606 has 16 divisors (see below), whose sum is σ = 33649613295840. Its totient is φ = 9948814351360.

The previous prime is 21164012026583. The next prime is 21164012026711. The reversal of 21164012026606 is 60662021046112.

It is a super-3 number, since 3×21164012026606³ (a number of 41 digits) contains 333 as substring.

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, 334990450 + ... + 335053621.

It is an arithmetic number, because the mean of its divisors is an integer number (2103100830990).

Almost surely, 2^{21164012026606} is an apocalyptic number.

21164012026606 is a deficient number, since it is larger than the sum of its proper divisors (12485601269234).

21164012026606 is a wasteful number, since it uses less digits than its factorization.

21164012026606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670045019.

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 21164012026606 in words is "twenty-one trillion, one hundred sixty-four billion, twelve million, twenty-six thousand, six hundred six".