20432450275 has 12 divisors (see below), whose sum is σ = 25432582032. Its totient is φ = 16283803040.

The previous prime is 20432450197. The next prime is 20432450281. The reversal of 20432450275 is 57205423402.

It is a de Polignac number, because none of the positive numbers 2^k-20432450275 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20432450275.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1547224 + ... + 1560373.

It is an arithmetic number, because the mean of its divisors is an integer number (2119381836).

Almost surely, 2^20432450275 is an apocalyptic number.

20432450275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20432450275 is a deficient number, since it is larger than the sum of its proper divisors (5000131757).

20432450275 is a wasteful number, since it uses less digits than its factorization.

20432450275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3107870 (or 3107865 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 34.

Adding to 20432450275 its reverse (57205423402), we get a palindrome (77637873677).

The spelling of 20432450275 in words is "twenty billion, four hundred thirty-two million, four hundred fifty thousand, two hundred seventy-five".