7997823281854 has 32 divisors (see below), whose sum is σ = 14433641637120. Its totient is φ = 3246903672768.

The previous prime is 7997823281843. The next prime is 7997823281939. The reversal of 7997823281854 is 4581823287997.

It is a Smith number, since the sum of its digits (73) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1067274 + ... + 4139410.

It is an arithmetic number, because the mean of its divisors is an integer number (451051301160).

Almost surely, 2^{7997823281854} is an apocalyptic number.

7997823281854 is a deficient number, since it is larger than the sum of its proper divisors (6435818355266).

7997823281854 is a wasteful number, since it uses less digits than its factorization.

7997823281854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3081952.

The product of its digits is 487710720, while the sum is 73.

The spelling of 7997823281854 in words is "seven trillion, nine hundred ninety-seven billion, eight hundred twenty-three million, two hundred eighty-one thousand, eight hundred fifty-four".