331649359740 has 288 divisors, whose sum is σ = 1145924881920. Its totient is φ = 80141757696.

The previous prime is 331649359709. The next prime is 331649359813. The reversal of 331649359740 is 47953946133.

331649359740 is a `hidden beast` number, since 3 + 3 + 1 + 6 + 4 + 9 + 3 + 597 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2045742 + ... + 2201898.

It is an arithmetic number, because the mean of its divisors is an integer number (3978905840).

Almost surely, 2^331649359740 is an apocalyptic number.

331649359740 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 331649359740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (572962440960).

331649359740 is an abundant number, since it is smaller than the sum of its proper divisors (814275522180).

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

331649359740 is a wasteful number, since it uses less digits than its factorization.

331649359740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156223 (or 156209 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 54.

The spelling of 331649359740 in words is "three hundred thirty-one billion, six hundred forty-nine million, three hundred fifty-nine thousand, seven hundred forty".