331988647680 has 720 divisors, whose sum is σ = 1261233684480. Its totient is φ = 83147710464.

The previous prime is 331988647673. The next prime is 331988647693. The reversal of 331988647680 is 86746889133.

331988647680 is a `hidden beast` number, since 3 + 3 + 1 + 9 + 8 + 86 + 476 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a super-2 number, since 2×331988647680² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 250179177 + ... + 250180503.

Almost surely, 2^331988647680 is an apocalyptic number.

331988647680 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 331988647680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (630616842240).

331988647680 is an abundant number, since it is smaller than the sum of its proper divisors (929245036800).

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

331988647680 is a wasteful number, since it uses less digits than its factorization.

331988647680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506 (or 1483 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 63.

The spelling of 331988647680 in words is "three hundred thirty-one billion, nine hundred eighty-eight million, six hundred forty-seven thousand, six hundred eighty".