21852254356346 has 16 divisors (see below), whose sum is σ = 34503723159360. Its totient is φ = 10351018758240.

The previous prime is 21852254356343. The next prime is 21852254356363. The reversal of 21852254356346 is 64365345225812.

It is a junction number, because it is equal to n+sod(n) for n = 21852254356291 and 21852254356300.

It is not an unprimeable number, because it can be changed into a prime (21852254356343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7502075 + ... + 9999281.

It is an arithmetic number, because the mean of its divisors is an integer number (2156482697460).

Almost surely, 2^{21852254356346} is an apocalyptic number.

21852254356346 is a deficient number, since it is larger than the sum of its proper divisors (12651468803014).

21852254356346 is a wasteful number, since it uses less digits than its factorization.

21852254356346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2727509.

The product of its digits is 41472000, while the sum is 56.

The spelling of 21852254356346 in words is "twenty-one trillion, eight hundred fifty-two billion, two hundred fifty-four million, three hundred fifty-six thousand, three hundred forty-six".