20143455175 has 6 divisors (see below), whose sum is σ = 24977884448. Its totient is φ = 16114764120.

The previous prime is 20143455139. The next prime is 20143455209. The reversal of 20143455175 is 57155434102.

It is not a de Polignac number, because 20143455175 - 2¹⁵ = 20143422407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 402869079 + ... + 402869128.

Almost surely, 2^20143455175 is an apocalyptic number.

20143455175 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20143455175 is a deficient number, since it is larger than the sum of its proper divisors (4834429273).

20143455175 is an equidigital number, since it uses as much as digits as its factorization.

20143455175 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805738217 (or 805738212 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 37.

Adding to 20143455175 its reverse (57155434102), we get a palindrome (77298889277).

The spelling of 20143455175 in words is "twenty billion, one hundred forty-three million, four hundred fifty-five thousand, one hundred seventy-five".