461564917843 has 4 divisors (see below), whose sum is σ = 472822598808. Its totient is φ = 450307236880.

The previous prime is 461564917841. The next prime is 461564917871. The reversal of 461564917843 is 348719465164.

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

It is a cyclic number.

It is not a de Polignac number, because 461564917843 - 2¹ = 461564917841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (461564917841) 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, 5628840421 + ... + 5628840502.

It is an arithmetic number, because the mean of its divisors is an integer number (118205649702).

Almost surely, 2^461564917843 is an apocalyptic number.

461564917843 is a deficient number, since it is larger than the sum of its proper divisors (11257680965).

461564917843 is a wasteful number, since it uses less digits than its factorization.

461564917843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11257680964.

The product of its digits is 17418240, while the sum is 58.

The spelling of 461564917843 in words is "four hundred sixty-one billion, five hundred sixty-four million, nine hundred seventeen thousand, eight hundred forty-three".