21276170270 has 16 divisors (see below), whose sum is σ = 38836503648. Its totient is φ = 8390602080.

The previous prime is 21276170257. The next prime is 21276170323. The reversal of 21276170270 is 7207167212.

It is a self number, because there is not a number n which added to its sum of digits gives 21276170270.

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, 14982509 + ... + 14983928.

It is an arithmetic number, because the mean of its divisors is an integer number (2427281478).

Almost surely, 2^21276170270 is an apocalyptic number.

21276170270 is a deficient number, since it is larger than the sum of its proper divisors (17560333378).

21276170270 is a wasteful number, since it uses less digits than its factorization.

21276170270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29966515.

The product of its (nonzero) digits is 16464, while the sum is 35.

The spelling of 21276170270 in words is "twenty-one billion, two hundred seventy-six million, one hundred seventy thousand, two hundred seventy".