21270027606 has 32 divisors (see below), whose sum is σ = 42636872448. Its totient is φ = 7073894880.

The previous prime is 21270027599. The next prime is 21270027617. The reversal of 21270027606 is 60672007212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6230356 + ... + 6233768.

It is an arithmetic number, because the mean of its divisors is an integer number (1332402264).

Almost surely, 2^21270027606 is an apocalyptic number.

21270027606 is an abundant number, since it is smaller than the sum of its proper divisors (21366844842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21270027606 is a wasteful number, since it uses less digits than its factorization.

21270027606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5476.

The product of its (nonzero) digits is 14112, while the sum is 33.

The spelling of 21270027606 in words is "twenty-one billion, two hundred seventy million, twenty-seven thousand, six hundred six".