8047442988981 has 96 divisors (see below), whose sum is σ = 13544258832000. Its totient is φ = 4553158901760.

The previous prime is 8047442988917. The next prime is 8047442989043. The reversal of 8047442988981 is 1898892447408.

8047442988981 is a `hidden beast` number, since 8 + 0 + 4 + 7 + 442 + 98 + 8 + 98 + 1 = 666.

It is not a de Polignac number, because 8047442988981 - 2⁶ = 8047442988917 is a prime.

It is a super-2 number, since 2×8047442988981² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8047442988281) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 36662245 + ... + 36881093.

It is an arithmetic number, because the mean of its divisors is an integer number (141086029500).

Almost surely, 2^{8047442988981} is an apocalyptic number.

It is an amenable number.

8047442988981 is a deficient number, since it is larger than the sum of its proper divisors (5496815843019).

8047442988981 is a wasteful number, since it uses less digits than its factorization.

8047442988981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219171 (or 219168 counting only the distinct ones).

The product of its (nonzero) digits is 297271296, while the sum is 72.

The spelling of 8047442988981 in words is "eight trillion, forty-seven billion, four hundred forty-two million, nine hundred eighty-eight thousand, nine hundred eighty-one".