329961981696 has 72 divisors (see below), whose sum is σ = 886236988560. Its totient is φ = 108978241536.

The previous prime is 329961981667. The next prime is 329961981703. The reversal of 329961981696 is 696189169923.

It is a self number, because there is not a number n which added to its sum of digits gives 329961981696.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1887105 + ... + 2054528.

Almost surely, 2^329961981696 is an apocalyptic number.

It is an amenable number.

329961981696 is an abundant number, since it is smaller than the sum of its proper divisors (556275006864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

329961981696 is a wasteful number, since it uses less digits than its factorization.

329961981696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3941761 (or 3941747 counting only the distinct ones).

The product of its digits is 68024448, while the sum is 69.

The spelling of 329961981696 in words is "three hundred twenty-nine billion, nine hundred sixty-one million, nine hundred eighty-one thousand, six hundred ninety-six".