1983767761650 has 96 divisors (see below), whose sum is σ = 4952978756928. Its totient is φ = 525433708800.

The previous prime is 1983767761631. The next prime is 1983767761687. The reversal of 1983767761650 is 561677673891.

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 47 ways as a sum of consecutive naturals, for example, 67361829 + ... + 67391271.

It is an arithmetic number, because the mean of its divisors is an integer number (51593528718).

Almost surely, 2^{1983767761650} is an apocalyptic number.

1983767761650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1983767761650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2476489378464).

1983767761650 is an abundant number, since it is smaller than the sum of its proper divisors (2969210995278).

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

1983767761650 is a wasteful number, since it uses less digits than its factorization.

1983767761650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32476 (or 32471 counting only the distinct ones).

The product of its (nonzero) digits is 80015040, while the sum is 66.

The spelling of 1983767761650 in words is "one trillion, nine hundred eighty-three billion, seven hundred sixty-seven million, seven hundred sixty-one thousand, six hundred fifty".