328646699520 has 160 divisors (see below), whose sum is σ = 1056090923712. Its totient is φ = 87184637952.

The previous prime is 328646699501. The next prime is 328646699531. The reversal of 328646699520 is 25996646823.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1371379 + ... + 1593101.

Almost surely, 2^328646699520 is an apocalyptic number.

328646699520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 328646699520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (528045461856).

328646699520 is an abundant number, since it is smaller than the sum of its proper divisors (727444224192).

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

328646699520 is a wasteful number, since it uses less digits than its factorization.

328646699520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221942 (or 221926 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 60.

The spelling of 328646699520 in words is "three hundred twenty-eight billion, six hundred forty-six million, six hundred ninety-nine thousand, five hundred twenty".