21413124053253 has 24 divisors (see below), whose sum is σ = 32081978344416. Its totient is φ = 14272588962000.

The previous prime is 21413124053239. The next prime is 21413124053281. The reversal of 21413124053253 is 35235042131412.

21413124053253 is a `hidden beast` number, since 2 + 1 + 4 + 1 + 31 + 2 + 40 + 532 + 53 = 666.

It is not a de Polignac number, because 21413124053253 - 2¹⁸ = 21413123791109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21413124053213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7495618 + ... + 9950403.

It is an arithmetic number, because the mean of its divisors is an integer number (1336749097684).

Almost surely, 2^{21413124053253} is an apocalyptic number.

It is an amenable number.

21413124053253 is a deficient number, since it is larger than the sum of its proper divisors (10668854291163).

21413124053253 is an equidigital number, since it uses as much as digits as its factorization.

21413124053253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17451087 (or 17451075 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 21413124053253 its reverse (35235042131412), we get a palindrome (56648166184665).

The spelling of 21413124053253 in words is "twenty-one trillion, four hundred thirteen billion, one hundred twenty-four million, fifty-three thousand, two hundred fifty-three".