21602426225253 has 16 divisors (see below), whose sum is σ = 29545656007680. Its totient is φ = 14033106676976.

The previous prime is 21602426225209. The next prime is 21602426225351. The reversal of 21602426225253 is 35252262420612.

It is not a de Polignac number, because 21602426225253 - 2³⁰ = 21601352483429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21602426225953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337432083 + ... + 337496096.

It is an arithmetic number, because the mean of its divisors is an integer number (1846603500480).

Almost surely, 2^{21602426225253} is an apocalyptic number.

It is an amenable number.

21602426225253 is a deficient number, since it is larger than the sum of its proper divisors (7943229782427).

21602426225253 is a wasteful number, since it uses less digits than its factorization.

21602426225253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674928456.

The product of its (nonzero) digits is 691200, while the sum is 42.

Adding to 21602426225253 its reverse (35252262420612), we get a palindrome (56854688645865).

The spelling of 21602426225253 in words is "twenty-one trillion, six hundred two billion, four hundred twenty-six million, two hundred twenty-five thousand, two hundred fifty-three".