21302458670 has 8 divisors (see below), whose sum is σ = 38344425624. Its totient is φ = 8520983464.

The previous prime is 21302458649. The next prime is 21302458679. The reversal of 21302458670 is 7685420312.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21302458679) 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, 1065122924 + ... + 1065122943.

It is an arithmetic number, because the mean of its divisors is an integer number (4793053203).

Almost surely, 2^21302458670 is an apocalyptic number.

21302458670 is a deficient number, since it is larger than the sum of its proper divisors (17041966954).

21302458670 is a wasteful number, since it uses less digits than its factorization.

21302458670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130245874.

The product of its (nonzero) digits is 80640, while the sum is 38.

Adding to 21302458670 its reverse (7685420312), we get a palindrome (28987878982).

The spelling of 21302458670 in words is "twenty-one billion, three hundred two million, four hundred fifty-eight thousand, six hundred seventy".