461132566521 has 16 divisors (see below), whose sum is σ = 674250006528. Its totient is φ = 278011062800.

The previous prime is 461132566493. The next prime is 461132566537. The reversal of 461132566521 is 125665231164.

It is a cyclic number.

It is not a de Polignac number, because 461132566521 - 2³¹ = 458985082873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (461132566421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36574101 + ... + 36586706.

It is an arithmetic number, because the mean of its divisors is an integer number (42140625408).

Almost surely, 2^461132566521 is an apocalyptic number.

It is an amenable number.

461132566521 is a deficient number, since it is larger than the sum of its proper divisors (213117440007).

461132566521 is a wasteful number, since it uses less digits than its factorization.

461132566521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73161012.

The product of its digits is 259200, while the sum is 42.

Adding to 461132566521 its reverse (125665231164), we get a palindrome (586797797685).

The spelling of 461132566521 in words is "four hundred sixty-one billion, one hundred thirty-two million, five hundred sixty-six thousand, five hundred twenty-one".