7999758579997 has 16 divisors (see below), whose sum is σ = 8822175078400. Its totient is φ = 7224777497520.

The previous prime is 7999758579983. The next prime is 7999758580043.

7999758579997 is nontrivially palindromic in base 10.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7999758579997 is a prime.

It is a super-2 number, since 2×7999758579997² (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 (7999758579947) 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, 101318247 + ... + 101397172.

It is an arithmetic number, because the mean of its divisors is an integer number (551385942400).

Almost surely, 2^{7999758579997} is an apocalyptic number.

It is an amenable number.

7999758579997 is a deficient number, since it is larger than the sum of its proper divisors (822416498403).

7999758579997 is a wasteful number, since it uses less digits than its factorization.

7999758579997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202715536.

The product of its digits is 255197968200, while the sum is 100.

The spelling of 7999758579997 in words is "seven trillion, nine hundred ninety-nine billion, seven hundred fifty-eight million, five hundred seventy-nine thousand, nine hundred ninety-seven".