21514420001353 has 4 divisors (see below), whose sum is σ = 21520821200788. Its totient is φ = 21508018801920.

The previous prime is 21514420001323. The next prime is 21514420001411. The reversal of 21514420001353 is 35310002441512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12191186761744 + 9323233239609 = 3491588^2 + 3053397^2 .

It is a cyclic number.

It is not a de Polignac number, because 21514420001353 - 2¹³ = 21514419993161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21514420001323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3200594676 + ... + 3200601397.

It is an arithmetic number, because the mean of its divisors is an integer number (5380205300197).

Almost surely, 2^{21514420001353} is an apocalyptic number.

It is an amenable number.

21514420001353 is a deficient number, since it is larger than the sum of its proper divisors (6401199435).

21514420001353 is an equidigital number, since it uses as much as digits as its factorization.

21514420001353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6401199434.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 21514420001353 its reverse (35310002441512), we get a palindrome (56824422442865).

The spelling of 21514420001353 in words is "twenty-one trillion, five hundred fourteen billion, four hundred twenty million, one thousand, three hundred fifty-three".