19630826595872 has 54 divisors (see below), whose sum is σ = 38755017748629. Its totient is φ = 9788357089920.

The previous prime is 19630826595857. The next prime is 19630826595907. The reversal of 19630826595872 is 27859562803691.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 18976792087696 + 654034508176 = 4356236^2 + 808724^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=3132956.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19630826595796 and 19630826595805.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 11554340879 + ... + 11554342577.

Almost surely, 2^{19630826595872} is an apocalyptic number.

It is an amenable number.

19630826595872 is a deficient number, since it is larger than the sum of its proper divisors (19124191152757).

19630826595872 is an frugal number, since it uses more digits than its factorization.

19630826595872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4330 (or 2162 counting only the distinct ones).

The product of its (nonzero) digits is 391910400, while the sum is 71.

The spelling of 19630826595872 in words is "nineteen trillion, six hundred thirty billion, eight hundred twenty-six million, five hundred ninety-five thousand, eight hundred seventy-two".