329221672428 has 36 divisors (see below), whose sum is σ = 844367433560. Its totient is φ = 99764142720.

The previous prime is 329221672387. The next prime is 329221672447. The reversal of 329221672428 is 824276122923.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113366893 + ... + 113369796.

Almost surely, 2^329221672428 is an apocalyptic number.

It is an amenable number.

329221672428 is an abundant number, since it is smaller than the sum of its proper divisors (515145761132).

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

329221672428 is a wasteful number, since it uses less digits than its factorization.

329221672428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226736718 (or 226736705 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 48.

The spelling of 329221672428 in words is "three hundred twenty-nine billion, two hundred twenty-one million, six hundred seventy-two thousand, four hundred twenty-eight".