992178319121 has 8 divisors (see below), whose sum is σ = 1082849649024. Its totient is φ = 901585872720.

The previous prime is 992178319117. The next prime is 992178319273. The reversal of 992178319121 is 121913871299.

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 992178319121 - 2² = 992178319117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (992178319721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19694570 + ... + 19744883.

It is an arithmetic number, because the mean of its divisors is an integer number (135356206128).

Almost surely, 2^992178319121 is an apocalyptic number.

It is an amenable number.

992178319121 is a deficient number, since it is larger than the sum of its proper divisors (90671329903).

992178319121 is a wasteful number, since it uses less digits than its factorization.

992178319121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39441751.

The product of its digits is 489888, while the sum is 53.

The spelling of 992178319121 in words is "nine hundred ninety-two billion, one hundred seventy-eight million, three hundred nineteen thousand, one hundred twenty-one".