992938972872 has 256 divisors, whose sum is σ = 3201417676800. Its totient is φ = 249128110080.

The previous prime is 992938972859. The next prime is 992938972937. The reversal of 992938972872 is 278279839299.

It is a junction number, because it is equal to n+sod(n) for n = 992938972794 and 992938972803.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9452028 + ... + 9556500.

It is an arithmetic number, because the mean of its divisors is an integer number (12505537800).

Almost surely, 2^992938972872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 992938972872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1600708838400).

992938972872 is an abundant number, since it is smaller than the sum of its proper divisors (2208478703928).

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

992938972872 is a wasteful number, since it uses less digits than its factorization.

992938972872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104676 (or 104672 counting only the distinct ones).

The product of its digits is 493807104, while the sum is 75.

The spelling of 992938972872 in words is "nine hundred ninety-two billion, nine hundred thirty-eight million, nine hundred seventy-two thousand, eight hundred seventy-two".