19825708061 has 12 divisors (see below), whose sum is σ = 21815982720. Its totient is φ = 17965621080.

The previous prime is 19825708013. The next prime is 19825708079. The reversal of 19825708061 is 16080752891.

It is not a de Polignac number, because 19825708061 - 2⁶ = 19825707997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19825707997 and 19825708015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19825708361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 976205 + ... + 996306.

It is an arithmetic number, because the mean of its divisors is an integer number (1817998560).

Almost surely, 2^19825708061 is an apocalyptic number.

It is an amenable number.

19825708061 is a deficient number, since it is larger than the sum of its proper divisors (1990274659).

19825708061 is a wasteful number, since it uses less digits than its factorization.

19825708061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972576 (or 1972553 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 47.

The spelling of 19825708061 in words is "nineteen billion, eight hundred twenty-five million, seven hundred eight thousand, sixty-one".