461812666624 has 27 divisors (see below), whose sum is σ = 921843081733. Its totient is φ = 230900896768.

The previous prime is 461812666613. The next prime is 461812666631. The reversal of 461812666624 is 426666218164.

The square root of 461812666624 is 679568.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 77372985600 + 384439681024 = 278160^2 + 620032^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 10851852 + ... + 10894324.

Almost surely, 2^461812666624 is an apocalyptic number.

461812666624 is the 679568-th square number.

It is an amenable number.

461812666624 is a deficient number, since it is larger than the sum of its proper divisors (460030415109).

461812666624 is an frugal number, since it uses more digits than its factorization.

461812666624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84962 (or 42475 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 52.

The spelling of 461812666624 in words is "four hundred sixty-one billion, eight hundred twelve million, six hundred sixty-six thousand, six hundred twenty-four".