1966003580788 has 96 divisors (see below), whose sum is σ = 4030494676992. Its totient is φ = 831619008000.

The previous prime is 1966003580777. The next prime is 1966003580789. The reversal of 1966003580788 is 8870853006691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966003580789) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3482170 + ... + 4007182.

It is an arithmetic number, because the mean of its divisors is an integer number (41984319552).

Almost surely, 2^{1966003580788} is an apocalyptic number.

It is an amenable number.

1966003580788 is an abundant number, since it is smaller than the sum of its proper divisors (2064491096204).

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

1966003580788 is a wasteful number, since it uses less digits than its factorization.

1966003580788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525185 (or 525183 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 61.

The spelling of 1966003580788 in words is "one trillion, nine hundred sixty-six billion, three million, five hundred eighty thousand, seven hundred eighty-eight".