329426828981440 has 56 divisors (see below), whose sum is σ = 802690604836560. Its totient is φ = 128706295968768.

The previous prime is 329426828981431. The next prime is 329426828981519. The reversal of 329426828981440 is 44189828624923.

It is a self number, because there is not a number n which added to its sum of digits gives 329426828981440.

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, 11970437875 + ... + 11970465394.

Almost surely, 2^{329426828981440} is an apocalyptic number.

It is an amenable number.

329426828981440 is an abundant number, since it is smaller than the sum of its proper divisors (473263775855120).

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

329426828981440 is a wasteful number, since it uses less digits than its factorization.

329426828981440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23940903329 (or 23940903319 counting only the distinct ones).

The product of its (nonzero) digits is 382205952, while the sum is 70.

The spelling of 329426828981440 in words is "three hundred twenty-nine trillion, four hundred twenty-six billion, eight hundred twenty-eight million, nine hundred eighty-one thousand, four hundred forty".