9901659215 has 8 divisors (see below), whose sum is σ = 13579418400. Its totient is φ = 6789709152.

The previous prime is 9901659181. The next prime is 9901659233. The reversal of 9901659215 is 5129561099.

9901659215 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 9901659215 - 2¹⁰ = 9901658191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9901659215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141452240 + ... + 141452309.

It is an arithmetic number, because the mean of its divisors is an integer number (1697427300).

Almost surely, 2^9901659215 is an apocalyptic number.

9901659215 is a deficient number, since it is larger than the sum of its proper divisors (3677759185).

9901659215 is a wasteful number, since it uses less digits than its factorization.

9901659215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282904561.

The product of its (nonzero) digits is 218700, while the sum is 47.

The square root of 9901659215 is about 99507.0812304330. The cubic root of 9901659215 is about 2147.3491190469.

The spelling of 9901659215 in words is "nine billion, nine hundred one million, six hundred fifty-nine thousand, two hundred fifteen".