1966473594432 has 84 divisors (see below), whose sum is σ = 5642558568556. Its totient is φ = 654791454720.

The previous prime is 1966473594431. The next prime is 1966473594461. The reversal of 1966473594432 is 2344953746691.

It is a happy number.

1966473594432 is a `hidden beast` number, since 1 + 9 + 6 + 6 + 4 + 7 + 3 + 594 + 4 + 32 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 131055584256 + 1835418010176 = 362016^2 + 1354776^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1966473594432.

It is not an unprimeable number, because it can be changed into a prime (1966473594431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1282069 + ... + 2361492.

Almost surely, 2^{1966473594432} is an apocalyptic number.

1966473594432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1966473594432 is an abundant number, since it is smaller than the sum of its proper divisors (3676084974124).

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

1966473594432 is a wasteful number, since it uses less digits than its factorization.

1966473594432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3644516 (or 3644503 counting only the distinct ones).

The product of its digits is 117573120, while the sum is 63.

The spelling of 1966473594432 in words is "one trillion, nine hundred sixty-six billion, four hundred seventy-three million, five hundred ninety-four thousand, four hundred thirty-two".