19688674071 has 16 divisors (see below), whose sum is σ = 28664229888. Its totient is φ = 11921630400.

The previous prime is 19688674039. The next prime is 19688674079. The reversal of 19688674071 is 17047688691.

It is a happy number.

It is not a de Polignac number, because 19688674071 - 2⁵ = 19688674039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19688674079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235735 + ... + 308136.

It is an arithmetic number, because the mean of its divisors is an integer number (1791514368).

Almost surely, 2^19688674071 is an apocalyptic number.

19688674071 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

19688674071 is a deficient number, since it is larger than the sum of its proper divisors (8975555817).

19688674071 is a wasteful number, since it uses less digits than its factorization.

19688674071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544982.

The product of its (nonzero) digits is 4064256, while the sum is 57.

The spelling of 19688674071 in words is "nineteen billion, six hundred eighty-eight million, six hundred seventy-four thousand, seventy-one".