21621271330713 has 8 divisors (see below), whose sum is σ = 28937975318208. Its totient is φ = 14359374115184.

The previous prime is 21621271330699. The next prime is 21621271330733. The reversal of 21621271330713 is 31703317212612.

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 21621271330713 - 2¹⁴ = 21621271314329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21621271330733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13701692070 + ... + 13701693647.

It is an arithmetic number, because the mean of its divisors is an integer number (3617246914776).

Almost surely, 2^{21621271330713} is an apocalyptic number.

It is an amenable number.

21621271330713 is a deficient number, since it is larger than the sum of its proper divisors (7316703987495).

21621271330713 is a wasteful number, since it uses less digits than its factorization.

21621271330713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27403385983.

The product of its (nonzero) digits is 63504, while the sum is 39.

The spelling of 21621271330713 in words is "twenty-one trillion, six hundred twenty-one billion, two hundred seventy-one million, three hundred thirty thousand, seven hundred thirteen".