19688337852429 has 16 divisors (see below), whose sum is σ = 27098071070720. Its totient is φ = 12702086092080.

The previous prime is 19688337852383. The next prime is 19688337852439. The reversal of 19688337852429 is 92425873388691.

It is not a de Polignac number, because 19688337852429 - 2¹⁶ = 19688337786893 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19688337852439) 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, 21857994 + ... + 22740900.

It is an arithmetic number, because the mean of its divisors is an integer number (1693629441920).

Almost surely, 2^{19688337852429} is an apocalyptic number.

It is an amenable number.

19688337852429 is a deficient number, since it is larger than the sum of its proper divisors (7409733218291).

19688337852429 is a wasteful number, since it uses less digits than its factorization.

19688337852429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122720.

The product of its digits is 1254113280, while the sum is 75.

The spelling of 19688337852429 in words is "nineteen trillion, six hundred eighty-eight billion, three hundred thirty-seven million, eight hundred fifty-two thousand, four hundred twenty-nine".