21267270733 has 8 divisors (see below), whose sum is σ = 21395583000. Its totient is φ = 21139164480.

The previous prime is 21267270709. The next prime is 21267270749. The reversal of 21267270733 is 33707276212.

It can be written as a sum of positive squares in 4 ways, for example, as 17045130249 + 4222140484 = 130557^2 + 64978^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 21267270733 - 2⁵ = 21267270701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21267273733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158143 + ... + 259891.

It is an arithmetic number, because the mean of its divisors is an integer number (2674447875).

Almost surely, 2^21267270733 is an apocalyptic number.

It is an amenable number.

21267270733 is a deficient number, since it is larger than the sum of its proper divisors (128312267).

21267270733 is a wasteful number, since it uses less digits than its factorization.

21267270733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103007.

The product of its (nonzero) digits is 148176, while the sum is 40.

The spelling of 21267270733 in words is "twenty-one billion, two hundred sixty-seven million, two hundred seventy thousand, seven hundred thirty-three".