19753128844 has 6 divisors (see below), whose sum is σ = 34567975484. Its totient is φ = 9876564420.

The previous prime is 19753128809. The next prime is 19753128877. The reversal of 19753128844 is 44882135791.

It is a junction number, because it is equal to n+sod(n) for n = 19753128791 and 19753128800.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2469141102 + ... + 2469141109.

Almost surely, 2^19753128844 is an apocalyptic number.

It is an amenable number.

19753128844 is a deficient number, since it is larger than the sum of its proper divisors (14814846640).

19753128844 is a wasteful number, since it uses less digits than its factorization.

19753128844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4938282215 (or 4938282213 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 52.

The spelling of 19753128844 in words is "nineteen billion, seven hundred fifty-three million, one hundred twenty-eight thousand, eight hundred forty-four".