21603275260675 has 6 divisors (see below), whose sum is σ = 26788061323268. Its totient is φ = 17282620208520.

The previous prime is 21603275260673. The next prime is 21603275260681. The reversal of 21603275260675 is 57606257230612.

It is not a de Polignac number, because 21603275260675 - 2¹ = 21603275260673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21603275260673) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 432065505189 + ... + 432065505238.

Almost surely, 2^{21603275260675} is an apocalyptic number.

21603275260675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21603275260675 is a deficient number, since it is larger than the sum of its proper divisors (5184786062593).

21603275260675 is an equidigital number, since it uses as much as digits as its factorization.

21603275260675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864131010437 (or 864131010432 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 52.

The spelling of 21603275260675 in words is "twenty-one trillion, six hundred three billion, two hundred seventy-five million, two hundred sixty thousand, six hundred seventy-five".