6999999999999 has 8 divisors (see below), whose sum is σ = 9341888180352. Its totient is φ = 4662389243160.

The previous prime is 6999999999973. The next prime is 7000000000009. The reversal of 6999999999999 is 9999999999996.

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

It is not a de Polignac number, because 6999999999999 - 2¹² = 6999999995903 is a prime.

It is a super-9 number, since 9×6999999999999⁹ (a number of 117 digits) contains 999999999 as substring.

6999999999999 is a modest number, since divided by 9999999 gives 699999 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6999999999299) 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, 1069352059 + ... + 1069358604.

It is an arithmetic number, because the mean of its divisors is an integer number (1167736022544).

Almost surely, 2^{6999999999999} is an apocalyptic number.

6999999999999 is a deficient number, since it is larger than the sum of its proper divisors (2341888180353).

6999999999999 is a wasteful number, since it uses less digits than its factorization.

6999999999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2138711757.

The product of its digits is 1694577218886, while the sum is 114.

The spelling of 6999999999999 in words is "six trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".