20168570903 has 8 divisors (see below), whose sum is σ = 21721473648. Its totient is φ = 18615878784.

The previous prime is 20168570897. The next prime is 20168570911. The reversal of 20168570903 is 30907586102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20168570903 - 2⁸ = 20168570647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20168570923) 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 7 ways as a sum of consecutive naturals, for example, 186476 + ... + 274062.

It is an arithmetic number, because the mean of its divisors is an integer number (2715184206).

Almost surely, 2^20168570903 is an apocalyptic number.

20168570903 is a deficient number, since it is larger than the sum of its proper divisors (1552902745).

20168570903 is a wasteful number, since it uses less digits than its factorization.

20168570903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105313.

The product of its (nonzero) digits is 90720, while the sum is 41.

The spelling of 20168570903 in words is "twenty billion, one hundred sixty-eight million, five hundred seventy thousand, nine hundred three".