9721675135 has 16 divisors (see below), whose sum is σ = 11835734400. Its totient is φ = 7664864256.

The previous prime is 9721675123. The next prime is 9721675153. The reversal of 9721675135 is 5315761279.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 9721675135 - 2³¹ = 7574191487 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73981 + ... + 157849.

It is an arithmetic number, because the mean of its divisors is an integer number (739733400).

Almost surely, 2^9721675135 is an apocalyptic number.

9721675135 is a deficient number, since it is larger than the sum of its proper divisors (2114059265).

9721675135 is a wasteful number, since it uses less digits than its factorization.

9721675135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84210.

The product of its digits is 396900, while the sum is 46.

The square root of 9721675135 is about 98598.5554407366. Note that the first 3 decimals coincide. The cubic root of 9721675135 is about 2134.2585739331.

The spelling of 9721675135 in words is "nine billion, seven hundred twenty-one million, six hundred seventy-five thousand, one hundred thirty-five".