19687542801423 has 16 divisors (see below), whose sum is σ = 31304415883776. Its totient is φ = 10760892959520.

The previous prime is 19687542801373. The next prime is 19687542801431. The reversal of 19687542801423 is 32410824578691.

It is not a de Polignac number, because 19687542801423 - 2²⁰ = 19687541752847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19687542801623) 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, 20380478608 + ... + 20380479573.

It is an arithmetic number, because the mean of its divisors is an integer number (1956525992736).

It is a 1-persistent number, because it is pandigital, but 2⋅19687542801423 = 39375085602846 is not.

Almost surely, 2^{19687542801423} is an apocalyptic number.

19687542801423 is a deficient number, since it is larger than the sum of its proper divisors (11616873082353).

19687542801423 is a wasteful number, since it uses less digits than its factorization.

19687542801423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40760958214.

The product of its (nonzero) digits is 23224320, while the sum is 60.

The spelling of 19687542801423 in words is "nineteen trillion, six hundred eighty-seven billion, five hundred forty-two million, eight hundred one thousand, four hundred twenty-three".