19448807052085 has 4 divisors (see below), whose sum is σ = 23338568462508. Its totient is φ = 15559045641664.

The previous prime is 19448807052083. The next prime is 19448807052089. The reversal of 19448807052085 is 58025070884491.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11633058668529 + 7815748383556 = 3410727^2 + 2795666^2 .

It is a cyclic number.

It is not a de Polignac number, because 19448807052085 - 2¹ = 19448807052083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19448807052083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1944880705204 + ... + 1944880705213.

It is an arithmetic number, because the mean of its divisors is an integer number (5834642115627).

Almost surely, 2^{19448807052085} is an apocalyptic number.

It is an amenable number.

19448807052085 is a deficient number, since it is larger than the sum of its proper divisors (3889761410423).

19448807052085 is an equidigital number, since it uses as much as digits as its factorization.

19448807052085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3889761410422.

The product of its (nonzero) digits is 25804800, while the sum is 61.

The spelling of 19448807052085 in words is "nineteen trillion, four hundred forty-eight billion, eight hundred seven million, fifty-two thousand, eighty-five".