299085623649 has 12 divisors (see below), whose sum is σ = 433043629200. Its totient is φ = 198914541144.

The previous prime is 299085623591. The next prime is 299085623651. The reversal of 299085623649 is 946326580992.

299085623649 is a `hidden beast` number, since 2 + 9 + 9 + 0 + 8 + 562 + 3 + 64 + 9 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-299085623649 is a prime.

It is a super-2 number, since 2×299085623649² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (299085623689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39652239 + ... + 39659780.

It is an arithmetic number, because the mean of its divisors is an integer number (36086969100).

Almost surely, 2^299085623649 is an apocalyptic number.

It is an amenable number.

299085623649 is a deficient number, since it is larger than the sum of its proper divisors (133958005551).

299085623649 is a wasteful number, since it uses less digits than its factorization.

299085623649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79312444 (or 79312441 counting only the distinct ones).

The product of its (nonzero) digits is 50388480, while the sum is 63.

The spelling of 299085623649 in words is "two hundred ninety-nine billion, eighty-five million, six hundred twenty-three thousand, six hundred forty-nine".