21300312364 has 6 divisors (see below), whose sum is σ = 37275546644. Its totient is φ = 10650156180.

The previous prime is 21300312359. The next prime is 21300312379. The reversal of 21300312364 is 46321300312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2662539042 + ... + 2662539049.

Almost surely, 2^21300312364 is an apocalyptic number.

It is an amenable number.

21300312364 is a deficient number, since it is larger than the sum of its proper divisors (15975234280).

21300312364 is a wasteful number, since it uses less digits than its factorization.

21300312364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5325078095 (or 5325078093 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 21300312364 its reverse (46321300312), we get a palindrome (67621612676).

The spelling of 21300312364 in words is "twenty-one billion, three hundred million, three hundred twelve thousand, three hundred sixty-four".