799867745669 has 8 divisors (see below), whose sum is σ = 805288335960. Its totient is φ = 794451280896.

The previous prime is 799867745659. The next prime is 799867745681. The reversal of 799867745669 is 966547768997.

It can be written as a sum of positive squares in 4 ways, for example, as 52377815044 + 747489930625 = 228862^2 + 864575^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 799867745669 - 2¹² = 799867741573 is a prime.

It is a super-2 number, since 2×799867745669² (a number of 25 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 (799867745659) 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, 641804 + ... + 1418325.

It is an arithmetic number, because the mean of its divisors is an integer number (100661041995).

Almost surely, 2^799867745669 is an apocalyptic number.

It is an amenable number.

799867745669 is a deficient number, since it is larger than the sum of its proper divisors (5420590291).

799867745669 is a wasteful number, since it uses less digits than its factorization.

799867745669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2062759.

The product of its digits is 8641624320, while the sum is 83.

The spelling of 799867745669 in words is "seven hundred ninety-nine billion, eight hundred sixty-seven million, seven hundred forty-five thousand, six hundred sixty-nine".