21352525201326 has 16 divisors (see below), whose sum is σ = 46587327712128. Its totient is φ = 6470462182200.

The previous prime is 21352525201303. The next prime is 21352525201363. The reversal of 21352525201326 is 62310252525312.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161761554490 + ... + 161761554621.

It is an arithmetic number, because the mean of its divisors is an integer number (2911707982008).

Almost surely, 2^{21352525201326} is an apocalyptic number.

21352525201326 is an abundant number, since it is smaller than the sum of its proper divisors (25234802510802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21352525201326 is a wasteful number, since it uses less digits than its factorization.

21352525201326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323523109127.

The product of its (nonzero) digits is 216000, while the sum is 39.

Adding to 21352525201326 its reverse (62310252525312), we get a palindrome (83662777726638).

The spelling of 21352525201326 in words is "twenty-one trillion, three hundred fifty-two billion, five hundred twenty-five million, two hundred one thousand, three hundred twenty-six".