1966968662740 has 48 divisors (see below), whose sum is σ = 4375730620800. Its totient is φ = 740629948032.

The previous prime is 1966968662723. The next prime is 1966968662741. The reversal of 1966968662740 is 472668696691.

It is a self number, because there is not a number n which added to its sum of digits gives 1966968662740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966968662741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16425160 + ... + 16544479.

It is an arithmetic number, because the mean of its divisors is an integer number (91161054600).

Almost surely, 2^{1966968662740} is an apocalyptic number.

1966968662740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1966968662740 is an abundant number, since it is smaller than the sum of its proper divisors (2408761958060).

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

1966968662740 is a wasteful number, since it uses less digits than its factorization.

1966968662740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32969824 (or 32969822 counting only the distinct ones).

The product of its (nonzero) digits is 282175488, while the sum is 70.

The spelling of 1966968662740 in words is "one trillion, nine hundred sixty-six billion, nine hundred sixty-eight million, six hundred sixty-two thousand, seven hundred forty".