1996684730040 has 1536 divisors, whose sum is σ = 8504020224000. Its totient is φ = 369576345600.

The previous prime is 1996684730039. The next prime is 1996684730077. The reversal of 1996684730040 is 400374866991.

It is a super-2 number, since 2×1996684730040² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 5656330504 + ... + 5656330856.

It is an arithmetic number, because the mean of its divisors is an integer number (5536471500).

Almost surely, 2^{1996684730040} is an apocalyptic number.

1996684730040 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 1996684730040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4252010112000).

1996684730040 is an abundant number, since it is smaller than the sum of its proper divisors (6507335493960).

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

1996684730040 is a wasteful number, since it uses less digits than its factorization.

1996684730040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 57.

The spelling of 1996684730040 in words is "one trillion, nine hundred ninety-six billion, six hundred eighty-four million, seven hundred thirty thousand, forty".