19788013411 has 4 divisors (see below), whose sum is σ = 19788509824. Its totient is φ = 19787517000.

The previous prime is 19788013373. The next prime is 19788013433. The reversal of 19788013411 is 11431088791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11431088791 = 9323 ⋅1226117.

It is a cyclic number.

It is not a de Polignac number, because 19788013411 - 2¹¹ = 19788011363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19788013111) 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, 182640 + ... + 270061.

It is an arithmetic number, because the mean of its divisors is an integer number (4947127456).

Almost surely, 2^19788013411 is an apocalyptic number.

19788013411 is a deficient number, since it is larger than the sum of its proper divisors (496413).

19788013411 is an equidigital number, since it uses as much as digits as its factorization.

19788013411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496412.

The product of its (nonzero) digits is 48384, while the sum is 43.

The spelling of 19788013411 in words is "nineteen billion, seven hundred eighty-eight million, thirteen thousand, four hundred eleven".