461511212505 has 32 divisors (see below), whose sum is σ = 850348274688. Its totient is φ = 209366040000.

The previous prime is 461511212483. The next prime is 461511212507. The reversal of 461511212505 is 505212115164.

It is a happy number.

It is not a de Polignac number, because 461511212505 - 2¹⁹ = 461510688217 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (461511212507) 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 31 ways as a sum of consecutive naturals, for example, 16762371 + ... + 16789880.

It is an arithmetic number, because the mean of its divisors is an integer number (26573383584).

Almost surely, 2^461511212505 is an apocalyptic number.

It is an amenable number.

461511212505 is a deficient number, since it is larger than the sum of its proper divisors (388837062183).

461511212505 is a wasteful number, since it uses less digits than its factorization.

461511212505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33552397.

The product of its (nonzero) digits is 12000, while the sum is 33.

Adding to 461511212505 its reverse (505212115164), we get a palindrome (966723327669).

The spelling of 461511212505 in words is "four hundred sixty-one billion, five hundred eleven million, two hundred twelve thousand, five hundred five".