21352103532 has 18 divisors (see below), whose sum is σ = 53973372908. Its totient is φ = 7117367832.

The previous prime is 21352103527. The next prime is 21352103543. The reversal of 21352103532 is 23530125312.

It is a happy number.

21352103532 is a `hidden beast` number, since 21 + 3 + 5 + 2 + 103 + 532 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 21352103496 and 21352103505.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 296556958 + ... + 296557029.

Almost surely, 2^21352103532 is an apocalyptic number.

It is an amenable number.

21352103532 is an abundant number, since it is smaller than the sum of its proper divisors (32621269376).

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

21352103532 is a wasteful number, since it uses less digits than its factorization.

21352103532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593113997 (or 593113992 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Adding to 21352103532 its reverse (23530125312), we get a palindrome (44882228844).

The spelling of 21352103532 in words is "twenty-one billion, three hundred fifty-two million, one hundred three thousand, five hundred thirty-two".