2891979927882 has 192 divisors, whose sum is σ = 7120286933760. Its totient is φ = 843279360000.

The previous prime is 2891979927857. The next prime is 2891979927911. The reversal of 2891979927882 is 2887299791982.

2891979927882 is a `hidden beast` number, since 2 + 89 + 197 + 9 + 9 + 278 + 82 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 72408094 + ... + 72448022.

It is an arithmetic number, because the mean of its divisors is an integer number (37084827780).

Almost surely, 2^{2891979927882} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2891979927882, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3560143466880).

2891979927882 is an abundant number, since it is smaller than the sum of its proper divisors (4228307005878).

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

2891979927882 is a wasteful number, since it uses less digits than its factorization.

2891979927882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40269 (or 40266 counting only the distinct ones).

The product of its digits is 1316818944, while the sum is 81.

The spelling of 2891979927882 in words is "two trillion, eight hundred ninety-one billion, nine hundred seventy-nine million, nine hundred twenty-seven thousand, eight hundred eighty-two".