19126421958782 has 16 divisors (see below), whose sum is σ = 28802293859232. Its totient is φ = 9525659996160.

The previous prime is 19126421958781. The next prime is 19126421958877. The reversal of 19126421958782 is 28785912462191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19126421958781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14066498 + ... + 15366170.

It is an arithmetic number, because the mean of its divisors is an integer number (1800143366202).

Almost surely, 2^{19126421958782} is an apocalyptic number.

19126421958782 is a deficient number, since it is larger than the sum of its proper divisors (9675871900450).

19126421958782 is a wasteful number, since it uses less digits than its factorization.

19126421958782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328563.

The product of its digits is 34836480, while the sum is 65.

The spelling of 19126421958782 in words is "nineteen trillion, one hundred twenty-six billion, four hundred twenty-one million, nine hundred fifty-eight thousand, seven hundred eighty-two".