20445142175 has 24 divisors (see below), whose sum is σ = 27017127936. Its totient is φ = 15312086240.

The previous prime is 20445142171. The next prime is 20445142181. The reversal of 20445142175 is 57124154402.

It is not a de Polignac number, because 20445142175 - 2² = 20445142171 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 (20445142171) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 351239 + ... + 405288.

It is an arithmetic number, because the mean of its divisors is an integer number (1125713664).

Almost surely, 2^20445142175 is an apocalyptic number.

20445142175 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20445142175 is a deficient number, since it is larger than the sum of its proper divisors (6571985761).

20445142175 is a wasteful number, since it uses less digits than its factorization.

20445142175 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756607 (or 756602 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 35.

Adding to 20445142175 its reverse (57124154402), we get a palindrome (77569296577).

The spelling of 20445142175 in words is "twenty billion, four hundred forty-five million, one hundred forty-two thousand, one hundred seventy-five".