21303573969 has 8 divisors (see below), whose sum is σ = 28433259520. Its totient is φ = 14188135536.

The previous prime is 21303573899. The next prime is 21303573989. The reversal of 21303573969 is 96937530312.

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

It is not a de Polignac number, because 21303573969 - 2¹⁶ = 21303508433 is a prime.

It is a super-2 number, since 2×21303573969² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21303573989) 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, 3558289 + ... + 3564270.

It is an arithmetic number, because the mean of its divisors is an integer number (3554157440).

Almost surely, 2^21303573969 is an apocalyptic number.

It is an amenable number.

21303573969 is a deficient number, since it is larger than the sum of its proper divisors (7129685551).

21303573969 is an equidigital number, since it uses as much as digits as its factorization.

21303573969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7123559.

The product of its (nonzero) digits is 918540, while the sum is 48.

The spelling of 21303573969 in words is "twenty-one billion, three hundred three million, five hundred seventy-three thousand, nine hundred sixty-nine".