1691840335080 has 256 divisors, whose sum is σ = 6014582784000. Its totient is φ = 372552514560.

The previous prime is 1691840335069. The next prime is 1691840335091. The reversal of 1691840335080 is 805330481961.

It is an interprime number because it is at equal distance from previous prime (1691840335069) and next prime (1691840335091).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5661246 + ... + 5952594.

It is an arithmetic number, because the mean of its divisors is an integer number (23494464000).

Almost surely, 2^{1691840335080} is an apocalyptic number.

1691840335080 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 1691840335080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3007291392000).

1691840335080 is an abundant number, since it is smaller than the sum of its proper divisors (4322742448920).

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

1691840335080 is a wasteful number, since it uses less digits than its factorization.

1691840335080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291624 (or 291620 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 1691840335080 in words is "one trillion, six hundred ninety-one billion, eight hundred forty million, three hundred thirty-five thousand, eighty".