21370885069273 has 8 divisors (see below), whose sum is σ = 21391039957320. Its totient is φ = 21350735535360.

The previous prime is 21370885069231. The next prime is 21370885069297. The reversal of 21370885069273 is 37296058807312.

It can be written as a sum of positive squares in 4 ways, for example, as 2820911716249 + 18549973353024 = 1679557^2 + 4306968^2 .

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 21370885069273 - 2²¹ = 21370882972121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21370885064273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6670753 + ... + 9340273.

It is an arithmetic number, because the mean of its divisors is an integer number (2673879994665).

Almost surely, 2^{21370885069273} is an apocalyptic number.

It is an amenable number.

21370885069273 is a deficient number, since it is larger than the sum of its proper divisors (20154888047).

21370885069273 is a wasteful number, since it uses less digits than its factorization.

21370885069273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2677067.

The product of its (nonzero) digits is 30481920, while the sum is 61.

The spelling of 21370885069273 in words is "twenty-one trillion, three hundred seventy billion, eight hundred eighty-five million, sixty-nine thousand, two hundred seventy-three".