7988451320719 has 4 divisors (see below), whose sum is σ = 8158418370144. Its totient is φ = 7818484271296.

The previous prime is 7988451320671. The next prime is 7988451320749. The reversal of 7988451320719 is 9170231548897.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7988451320719 - 2⁹ = 7988451320207 is a prime.

It is a super-2 number, since 2×7988451320719² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7988451320749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84983524642 + ... + 84983524735.

It is an arithmetic number, because the mean of its divisors is an integer number (2039604592536).

Almost surely, 2^{7988451320719} is an apocalyptic number.

7988451320719 is a deficient number, since it is larger than the sum of its proper divisors (169967049425).

7988451320719 is a wasteful number, since it uses less digits than its factorization.

7988451320719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169967049424.

The product of its (nonzero) digits is 30481920, while the sum is 64.

The spelling of 7988451320719 in words is "seven trillion, nine hundred eighty-eight billion, four hundred fifty-one million, three hundred twenty thousand, seven hundred nineteen".