329999999999 has 4 divisors (see below), whose sum is σ = 330001687440. Its totient is φ = 329998312560.

The previous prime is 329999999993. The next prime is 330000000037. The reversal of 329999999999 is 999999999923.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999999999923 = 947 ⋅1055966209.

It is a cyclic number.

It is not a de Polignac number, because 329999999999 - 2¹⁶ = 329999934463 is a prime.

It is a super-9 number, since 9×329999999999⁹ (a number of 105 digits) contains 999999999 as substring.

It is a Duffinian number.

329999999999 is a modest number, since divided by 999999 gives 329999 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (329999999993) 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, 505067 + ... + 956604.

It is an arithmetic number, because the mean of its divisors is an integer number (82500421860).

Almost surely, 2^329999999999 is an apocalyptic number.

329999999999 is a deficient number, since it is larger than the sum of its proper divisors (1687441).

329999999999 is a wasteful number, since it uses less digits than its factorization.

329999999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1687440.

The product of its digits is 20920706406, while the sum is 95.

The spelling of 329999999999 in words is "three hundred twenty-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".