9992179238272 has 128 divisors (see below), whose sum is σ = 25674039417600. Its totient is φ = 3758813399040.

The previous prime is 9992179238183. The next prime is 9992179238291. The reversal of 9992179238272 is 2728329712999.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×9992179238272² (a number of 27 digits) contains 22 as substring.

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, 17193778 + ... + 17765425.

It is an arithmetic number, because the mean of its divisors is an integer number (200578432950).

Almost surely, 2^{9992179238272} is an apocalyptic number.

It is an amenable number.

9992179238272 is an abundant number, since it is smaller than the sum of its proper divisors (15681860179328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9992179238272 is a wasteful number, since it uses less digits than its factorization.

9992179238272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34959264 (or 34959252 counting only the distinct ones).

The product of its digits is 123451776, while the sum is 70.

The spelling of 9992179238272 in words is "nine trillion, nine hundred ninety-two billion, one hundred seventy-nine million, two hundred thirty-eight thousand, two hundred seventy-two".