475411525321781 has 4 divisors (see below), whose sum is σ = 476235462108012. Its totient is φ = 474587588535552.

The previous prime is 475411525321763. The next prime is 475411525321787. The reversal of 475411525321781 is 187123525114574.

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 331602861721156 + 143808663600625 = 18209966^2 + 11992025^2 .

It is a cyclic number.

It is not a de Polignac number, because 475411525321781 - 2⁶ = 475411525321717 is a prime.

It is a super-2 number, since 2×475411525321781² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (475411525321787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411968392250 + ... + 411968393403.

It is an arithmetic number, because the mean of its divisors is an integer number (119058865527003).

Almost surely, 2^{475411525321781} is an apocalyptic number.

It is an amenable number.

475411525321781 is a deficient number, since it is larger than the sum of its proper divisors (823936786231).

475411525321781 is an equidigital number, since it uses as much as digits as its factorization.

475411525321781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823936786230.

The product of its digits is 9408000, while the sum is 56.

The spelling of 475411525321781 in words is "four hundred seventy-five trillion, four hundred eleven billion, five hundred twenty-five million, three hundred twenty-one thousand, seven hundred eighty-one".