799999550005 has 4 divisors (see below), whose sum is σ = 959999460012. Its totient is φ = 639999640000.

The previous prime is 799999549963. The next prime is 799999550011. The reversal of 799999550005 is 500055999997.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500055999997 = 2677 ⋅186797161.

It can be written as a sum of positive squares in 2 ways, for example, as 564675599601 + 235323950404 = 751449^2 + 485102^2 .

It is not a de Polignac number, because 799999550005 - 2¹⁵ = 799999517237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79999954996 + ... + 79999955005.

It is an arithmetic number, because the mean of its divisors is an integer number (239999865003).

Almost surely, 2^799999550005 is an apocalyptic number.

It is an amenable number.

799999550005 is a deficient number, since it is larger than the sum of its proper divisors (159999910007).

799999550005 is a wasteful number, since it uses less digits than its factorization.

799999550005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159999910006.

The product of its (nonzero) digits is 51667875, while the sum is 67.

The spelling of 799999550005 in words is "seven hundred ninety-nine billion, nine hundred ninety-nine million, five hundred fifty thousand, five".