19863742801 has 16 divisors (see below), whose sum is σ = 23236014208. Its totient is φ = 16625347200.

The previous prime is 19863742783. The next prime is 19863742817. The reversal of 19863742801 is 10824736891.

It is not a de Polignac number, because 19863742801 - 2¹¹ = 19863740753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19863742861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1383781 + ... + 1398061.

It is an arithmetic number, because the mean of its divisors is an integer number (1452250888).

Almost surely, 2^19863742801 is an apocalyptic number.

It is an amenable number.

19863742801 is a deficient number, since it is larger than the sum of its proper divisors (3372271407).

19863742801 is a wasteful number, since it uses less digits than its factorization.

19863742801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18952.

The product of its (nonzero) digits is 580608, while the sum is 49.

The spelling of 19863742801 in words is "nineteen billion, eight hundred sixty-three million, seven hundred forty-two thousand, eight hundred one".