19985216241 has 8 divisors (see below), whose sum is σ = 26648357344. Its totient is φ = 13322776320.

The previous prime is 19985216239. The next prime is 19985216333. The reversal of 19985216241 is 14261258991.

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

It is not a de Polignac number, because 19985216241 - 2¹ = 19985216239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19985216221) 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, 104731 + ... + 225696.

It is an arithmetic number, because the mean of its divisors is an integer number (3331044668).

Almost surely, 2^19985216241 is an apocalyptic number.

It is an amenable number.

19985216241 is a deficient number, since it is larger than the sum of its proper divisors (6663141103).

19985216241 is a wasteful number, since it uses less digits than its factorization.

19985216241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350591.

The product of its digits is 311040, while the sum is 48.

The spelling of 19985216241 in words is "nineteen billion, nine hundred eighty-five million, two hundred sixteen thousand, two hundred forty-one".