1985569650673 has 8 divisors (see below), whose sum is σ = 2285786126592. Its totient is φ = 1689494091936.

The previous prime is 1985569650667. The next prime is 1985569650679. The reversal of 1985569650673 is 3760569655891.

It is an interprime number because it is at equal distance from previous prime (1985569650667) and next prime (1985569650679).

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

It is not a de Polignac number, because 1985569650673 - 2²⁵ = 1985536096241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1985569650679) 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, 1035228265 + ... + 1035230182.

It is an arithmetic number, because the mean of its divisors is an integer number (285723265824).

Almost surely, 2^{1985569650673} is an apocalyptic number.

It is an amenable number.

1985569650673 is a deficient number, since it is larger than the sum of its proper divisors (300216475919).

1985569650673 is a wasteful number, since it uses less digits than its factorization.

1985569650673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070458591.

The product of its (nonzero) digits is 367416000, while the sum is 70.

The spelling of 1985569650673 in words is "one trillion, nine hundred eighty-five billion, five hundred sixty-nine million, six hundred fifty thousand, six hundred seventy-three".