19468345125128 has 16 divisors (see below), whose sum is σ = 36864564409260. Its totient is φ = 9637794616000.

The previous prime is 19468345125067. The next prime is 19468345125161. The reversal of 19468345125128 is 82152154386491.

It can be written as a sum of positive squares in 2 ways, for example, as 16794407217604 + 2673937907524 = 4098098^2 + 1635218^2 .

It is a super-2 number, since 2×19468345125128² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12047242463 + ... + 12047244078.

Almost surely, 2^{19468345125128} is an apocalyptic number.

It is an amenable number.

19468345125128 is a deficient number, since it is larger than the sum of its proper divisors (17396219284132).

19468345125128 is a wasteful number, since it uses less digits than its factorization.

19468345125128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24094486648 (or 24094486644 counting only the distinct ones).

The product of its digits is 16588800, while the sum is 59.

The spelling of 19468345125128 in words is "nineteen trillion, four hundred sixty-eight billion, three hundred forty-five million, one hundred twenty-five thousand, one hundred twenty-eight".