1966289662520 has 32 divisors (see below), whose sum is σ = 4424196460320. Its totient is φ = 786507914880.

The previous prime is 1966289662433. The next prime is 1966289662531. The reversal of 1966289662520 is 252669826691.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5273450 + ... + 5633990.

It is an arithmetic number, because the mean of its divisors is an integer number (138256139385).

Almost surely, 2^{1966289662520} is an apocalyptic number.

1966289662520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1966289662520 is an abundant number, since it is smaller than the sum of its proper divisors (2457906797800).

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

1966289662520 is a wasteful number, since it uses less digits than its factorization.

1966289662520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496895 (or 496891 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 62.

The spelling of 1966289662520 in words is "one trillion, nine hundred sixty-six billion, two hundred eighty-nine million, six hundred sixty-two thousand, five hundred twenty".