7981579744 has 48 divisors (see below), whose sum is σ = 15866474400. Its totient is φ = 3952166400.

The previous prime is 7981579741. The next prime is 7981579763. The reversal of 7981579744 is 4479751897.

It is a super-2 number, since 2×7981579744² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7981579741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1684002 + ... + 1688734.

It is an arithmetic number, because the mean of its divisors is an integer number (330551550).

Almost surely, 2^7981579744 is an apocalyptic number.

It is an amenable number.

7981579744 is a deficient number, since it is larger than the sum of its proper divisors (7884894656).

7981579744 is a wasteful number, since it uses less digits than its factorization.

7981579744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5243 (or 5235 counting only the distinct ones).

The product of its digits is 17781120, while the sum is 61.

The square root of 7981579744 is about 89339.6873959160. The cubic root of 7981579744 is about 1998.4637990120.

The spelling of 7981579744 in words is "seven billion, nine hundred eighty-one million, five hundred seventy-nine thousand, seven hundred forty-four".