1966464666072 has 24 divisors (see below), whose sum is σ = 5325841804140. Its totient is φ = 655488222000.

The previous prime is 1966464666059. The next prime is 1966464666167. The reversal of 1966464666072 is 2706664646691.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13656004554 + ... + 13656004697.

Almost surely, 2^{1966464666072} is an apocalyptic number.

1966464666072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1966464666072 is an abundant number, since it is smaller than the sum of its proper divisors (3359377138068).

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

1966464666072 is a wasteful number, since it uses less digits than its factorization.

1966464666072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27312009263 (or 27312009256 counting only the distinct ones).

The product of its (nonzero) digits is 94058496, while the sum is 63.

The spelling of 1966464666072 in words is "one trillion, nine hundred sixty-six billion, four hundred sixty-four million, six hundred sixty-six thousand, seventy-two".