461547443581 has 16 divisors (see below), whose sum is σ = 545716656000. Its totient is φ = 381938937408.

The previous prime is 461547443579. The next prime is 461547443587. The reversal of 461547443581 is 185344745164.

It is not a de Polignac number, because 461547443581 - 2¹ = 461547443579 is a prime.

It is a super-2 number, since 2×461547443581² (a number of 24 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 (461547443587) 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, 2572311 + ... + 2745883.

It is an arithmetic number, because the mean of its divisors is an integer number (34107291000).

Almost surely, 2^461547443581 is an apocalyptic number.

It is an amenable number.

461547443581 is a deficient number, since it is larger than the sum of its proper divisors (84169212419).

461547443581 is a wasteful number, since it uses less digits than its factorization.

461547443581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186708.

The product of its digits is 6451200, while the sum is 52.

The spelling of 461547443581 in words is "four hundred sixty-one billion, five hundred forty-seven million, four hundred forty-three thousand, five hundred eighty-one".