999998656123692 has 24 divisors (see below), whose sum is σ = 2341633863813552. Its totient is φ = 332146647347200.

The previous prime is 999998656123679. The next prime is 999998656123717. The reversal of 999998656123692 is 296321656899999.

It is a junction number, because it is equal to n+sod(n) for n = 999998656123596 and 999998656123605.

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, 148279749909 + ... + 148279756652.

It is an arithmetic number, because the mean of its divisors is an integer number (97568077658898).

Almost surely, 2^{999998656123692} is an apocalyptic number.

It is an amenable number.

999998656123692 is an abundant number, since it is smaller than the sum of its proper divisors (1341635207689860).

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

999998656123692 is a wasteful number, since it uses less digits than its factorization.

999998656123692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296559506849 (or 296559506847 counting only the distinct ones).

The product of its digits is 55099802880, while the sum is 93.

The spelling of 999998656123692 in words is "nine hundred ninety-nine trillion, nine hundred ninety-eight billion, six hundred fifty-six million, one hundred twenty-three thousand, six hundred ninety-two".