21300610610 has 8 divisors (see below), whose sum is σ = 38341099116. Its totient is φ = 8520244240.

The previous prime is 21300610579. The next prime is 21300610621. The reversal of 21300610610 is 1601600312.

It can be written as a sum of positive squares in 2 ways, for example, as 20839520881 + 461089729 = 144359^2 + 21473^2 .

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

It is a super-3 number, since 3×21300610610³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1065030521 + ... + 1065030540.

Almost surely, 2^21300610610 is an apocalyptic number.

21300610610 is a deficient number, since it is larger than the sum of its proper divisors (17040488506).

21300610610 is a wasteful number, since it uses less digits than its factorization.

21300610610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2130061068.

The product of its (nonzero) digits is 216, while the sum is 20.

The spelling of 21300610610 in words is "twenty-one billion, three hundred million, six hundred ten thousand, six hundred ten".