7981311590159 has 16 divisors (see below), whose sum is σ = 8454478406400. Its totient is φ = 7513543328256.

The previous prime is 7981311590143. The next prime is 7981311590191. The reversal of 7981311590159 is 9510951131897.

It is a cyclic number.

It is not a de Polignac number, because 7981311590159 - 2⁴ = 7981311590143 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7981311590098 and 7981311590107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7981311590129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2005502 + ... + 4470420.

It is an arithmetic number, because the mean of its divisors is an integer number (528404900400).

Almost surely, 2^{7981311590159} is an apocalyptic number.

7981311590159 is a deficient number, since it is larger than the sum of its proper divisors (473166816241).

7981311590159 is a wasteful number, since it uses less digits than its factorization.

7981311590159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2466014.

The product of its (nonzero) digits is 3061800, while the sum is 59.

The spelling of 7981311590159 in words is "seven trillion, nine hundred eighty-one billion, three hundred eleven million, five hundred ninety thousand, one hundred fifty-nine".