699999999999999 has 8 divisors (see below), whose sum is σ = 949152542373120. Its totient is φ = 458757062146776.

The previous prime is 699999999999991. The next prime is 700000000000051. The reversal of 699999999999999 is 999999999999996.

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

It is not a de Polignac number, because 699999999999999 - 2³ = 699999999999991 is a prime.

It is a super-9 number, since 9×699999999999999⁹ (a number of 135 digits) contains 999999999 as substring.

699999999999999 is a modest number, since divided by 99999999 gives 6999999 as remainder.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 699999999999999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (699999999999991) 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, 1977401129767 + ... + 1977401130120.

It is an arithmetic number, because the mean of its divisors is an integer number (118644067796640).

Almost surely, 2^{699999999999999} is an apocalyptic number.

699999999999999 is a deficient number, since it is larger than the sum of its proper divisors (249152542373121).

699999999999999 is a wasteful number, since it uses less digits than its factorization.

699999999999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3954802259949.

The product of its digits is 137260754729766, while the sum is 132.

The spelling of 699999999999999 in words is "six hundred ninety-nine trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".