20683907275 has 6 divisors (see below), whose sum is σ = 25648045052. Its totient is φ = 16547125800.

The previous prime is 20683907273. The next prime is 20683907303. The reversal of 20683907275 is 57270938602.

It is not a de Polignac number, because 20683907275 - 2¹ = 20683907273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20683907273) 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 5 ways as a sum of consecutive naturals, for example, 413678121 + ... + 413678170.

Almost surely, 2^20683907275 is an apocalyptic number.

20683907275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20683907275 is a deficient number, since it is larger than the sum of its proper divisors (4964137777).

20683907275 is an equidigital number, since it uses as much as digits as its factorization.

20683907275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827356301 (or 827356296 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 49.

The spelling of 20683907275 in words is "twenty billion, six hundred eighty-three million, nine hundred seven thousand, two hundred seventy-five".