475165261348861 has 4 divisors (see below), whose sum is σ = 475217265873852. Its totient is φ = 475113256823872.

The previous prime is 475165261348819. The next prime is 475165261348867. The reversal of 475165261348861 is 168843162561574.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8273642443236 + 466891618905625 = 2876394^2 + 21607675^2 .

It is a cyclic number.

It is not a de Polignac number, because 475165261348861 - 2⁷ = 475165261348733 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 (475165261348867) 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, 26002248790 + ... + 26002267063.

It is an arithmetic number, because the mean of its divisors is an integer number (118804316468463).

Almost surely, 2^{475165261348861} is an apocalyptic number.

It is an amenable number.

475165261348861 is a deficient number, since it is larger than the sum of its proper divisors (52004524991).

475165261348861 is an equidigital number, since it uses as much as digits as its factorization.

475165261348861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52004524990.

The product of its digits is 232243200, while the sum is 67.

The spelling of 475165261348861 in words is "four hundred seventy-five trillion, one hundred sixty-five billion, two hundred sixty-one million, three hundred forty-eight thousand, eight hundred sixty-one".