1966437442559 has 8 divisors (see below), whose sum is σ = 2084732285568. Its totient is φ = 1851571435680.

The previous prime is 1966437442547. The next prime is 1966437442643. The reversal of 1966437442559 is 9552447346691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1966437442559 - 2³⁶ = 1897717965823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1966437442495 and 1966437442504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966437442759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 857207852 + ... + 857210145.

It is an arithmetic number, because the mean of its divisors is an integer number (260591535696).

Almost surely, 2^{1966437442559} is an apocalyptic number.

1966437442559 is a deficient number, since it is larger than the sum of its proper divisors (118294843009).

1966437442559 is a wasteful number, since it uses less digits than its factorization.

1966437442559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714418065.

The product of its digits is 195955200, while the sum is 65.

The spelling of 1966437442559 in words is "one trillion, nine hundred sixty-six billion, four hundred thirty-seven million, four hundred forty-two thousand, five hundred fifty-nine".