331664469040 has 120 divisors (see below), whose sum is σ = 802220333184. Its totient is φ = 127389849600.

The previous prime is 331664469011. The next prime is 331664469049. The reversal of 331664469040 is 40964466133.

It is a super-2 number, since 2×331664469040² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (331664469049) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42555384 + ... + 42563176.

Almost surely, 2^331664469040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331664469040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (401110166592).

331664469040 is an abundant number, since it is smaller than the sum of its proper divisors (470555864144).

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

331664469040 is a wasteful number, since it uses less digits than its factorization.

331664469040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8099 (or 7962 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 46.

The spelling of 331664469040 in words is "three hundred thirty-one billion, six hundred sixty-four million, four hundred sixty-nine thousand, forty".