1660311325040 has 240 divisors, whose sum is σ = 4113135599616. Its totient is φ = 622593216000.

The previous prime is 1660311325021. The next prime is 1660311325067. The reversal of 1660311325040 is 405231130661.

It is a junction number, because it is equal to n+sod(n) for n = 1660311324988 and 1660311325006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 582359615 + ... + 582362465.

Almost surely, 2^{1660311325040} is an apocalyptic number.

1660311325040 is a gapful number since it is divisible by the number (10) 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 1660311325040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2056567799808).

1660311325040 is an abundant number, since it is smaller than the sum of its proper divisors (2452824274576).

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

1660311325040 is a wasteful number, since it uses less digits than its factorization.

1660311325040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3108 (or 3059 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 1660311325040 in words is "one trillion, six hundred sixty billion, three hundred eleven million, three hundred twenty-five thousand, forty".