299285479681 has 4 divisors (see below), whose sum is σ = 299287557700. Its totient is φ = 299283401664.

The previous prime is 299285479673. The next prime is 299285479721. The reversal of 299285479681 is 186974582992.

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

It can be written as a sum of positive squares in 2 ways, for example, as 226846448656 + 72439031025 = 476284^2 + 269145^2 .

It is a cyclic number.

It is not a de Polignac number, because 299285479681 - 2³ = 299285479673 is a prime.

It is a super-2 number, since 2×299285479681² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 299285479681.

It is not an unprimeable number, because it can be changed into a prime (299285879681) 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, 805476 + ... + 1116853.

It is an arithmetic number, because the mean of its divisors is an integer number (74821889425).

Almost surely, 2^299285479681 is an apocalyptic number.

It is an amenable number.

299285479681 is a deficient number, since it is larger than the sum of its proper divisors (2078019).

299285479681 is a wasteful number, since it uses less digits than its factorization.

299285479681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078018.

The product of its digits is 156764160, while the sum is 70.

The spelling of 299285479681 in words is "two hundred ninety-nine billion, two hundred eighty-five million, four hundred seventy-nine thousand, six hundred eighty-one".