21710575329 has 8 divisors (see below), whose sum is σ = 28968400512. Its totient is φ = 14463233520.

The previous prime is 21710575303. The next prime is 21710575349. The reversal of 21710575329 is 92357501712.

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

It is not a de Polignac number, because 21710575329 - 2⁹ = 21710574817 is a prime.

It is a super-2 number, since 2×21710575329² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21710575349) 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, 2616009 + ... + 2624294.

It is an arithmetic number, because the mean of its divisors is an integer number (3621050064).

Almost surely, 2^21710575329 is an apocalyptic number.

It is an amenable number.

21710575329 is a deficient number, since it is larger than the sum of its proper divisors (7257825183).

21710575329 is a wasteful number, since it uses less digits than its factorization.

21710575329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5241687.

The product of its (nonzero) digits is 132300, while the sum is 42.

The spelling of 21710575329 in words is "twenty-one billion, seven hundred ten million, five hundred seventy-five thousand, three hundred twenty-nine".