21611245274606 has 32 divisors (see below), whose sum is σ = 35118047616960. Its totient is φ = 9974135834208.

The previous prime is 21611245274579. The next prime is 21611245274617. The reversal of 21611245274606 is 60647254211612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288547295 + ... + 288622181.

It is an arithmetic number, because the mean of its divisors is an integer number (1097438988030).

Almost surely, 2^{21611245274606} is an apocalyptic number.

21611245274606 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

21611245274606 is a deficient number, since it is larger than the sum of its proper divisors (13506802342354).

21611245274606 is an equidigital number, since it uses as much as digits as its factorization.

21611245274606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140605 (or 140579 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 47.

The spelling of 21611245274606 in words is "twenty-one trillion, six hundred eleven billion, two hundred forty-five million, two hundred seventy-four thousand, six hundred six".