21285651341 has 8 divisors (see below), whose sum is σ = 22408046400. Its totient is φ = 20163466080.

The previous prime is 21285651337. The next prime is 21285651371. The reversal of 21285651341 is 14315658212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21285651341 - 2² = 21285651337 is a prime.

It is a super-3 number, since 3×21285651341³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21285651295 and 21285651304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21285651311) 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, 182945 + ... + 275753.

It is an arithmetic number, because the mean of its divisors is an integer number (2801005800).

Almost surely, 2^21285651341 is an apocalyptic number.

It is an amenable number.

21285651341 is a deficient number, since it is larger than the sum of its proper divisors (1122395059).

21285651341 is a wasteful number, since it uses less digits than its factorization.

21285651341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104899.

The product of its digits is 57600, while the sum is 38.

The spelling of 21285651341 in words is "twenty-one billion, two hundred eighty-five million, six hundred fifty-one thousand, three hundred forty-one".