9912319215 has 32 divisors (see below), whose sum is σ = 16065319680. Its totient is φ = 5218470144.

The previous prime is 9912319201. The next prime is 9912319243. The reversal of 9912319215 is 5129132199.

It is not a de Polignac number, because 9912319215 - 2⁸ = 9912318959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 354372 + ... + 381318.

It is an arithmetic number, because the mean of its divisors is an integer number (502041240).

Almost surely, 2^9912319215 is an apocalyptic number.

9912319215 is a deficient number, since it is larger than the sum of its proper divisors (6153000465).

9912319215 is a wasteful number, since it uses less digits than its factorization.

9912319215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27271.

The product of its digits is 43740, while the sum is 42.

The square root of 9912319215 is about 99560.6308487446. The cubic root of 9912319215 is about 2148.1194455614.

The spelling of 9912319215 in words is "nine billion, nine hundred twelve million, three hundred nineteen thousand, two hundred fifteen".