20688097203 has 6 divisors (see below), whose sum is σ = 29882807084. Its totient is φ = 13792064796.

The previous prime is 20688097159. The next prime is 20688097219. The reversal of 20688097203 is 30279088602.

It is not a de Polignac number, because 20688097203 - 2⁶ = 20688097139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20688097223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1149338725 + ... + 1149338742.

Almost surely, 2^20688097203 is an apocalyptic number.

20688097203 is a deficient number, since it is larger than the sum of its proper divisors (9194709881).

20688097203 is a wasteful number, since it uses less digits than its factorization.

20688097203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2298677473 (or 2298677470 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 20688097203 in words is "twenty billion, six hundred eighty-eight million, ninety-seven thousand, two hundred three".