475975191971 has 4 divisors (see below), whose sum is σ = 476029954512. Its totient is φ = 475920429432.

The previous prime is 475975191959. The next prime is 475975191977. The reversal of 475975191971 is 179191579574.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 475975191971 - 2¹⁸ = 475974929827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 475975191898 and 475975191907.

It is not an unprimeable number, because it can be changed into a prime (475975191977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27368231 + ... + 27385616.

It is an arithmetic number, because the mean of its divisors is an integer number (119007488628).

Almost surely, 2^475975191971 is an apocalyptic number.

475975191971 is a deficient number, since it is larger than the sum of its proper divisors (54762541).

475975191971 is an equidigital number, since it uses as much as digits as its factorization.

475975191971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54762540.

The product of its digits is 25004700, while the sum is 65.

The spelling of 475975191971 in words is "four hundred seventy-five billion, nine hundred seventy-five million, one hundred ninety-one thousand, nine hundred seventy-one".