663010566461 has 4 divisors (see below), whose sum is σ = 663597822300. Its totient is φ = 662423310624.

The previous prime is 663010566431. The next prime is 663010566479. The reversal of 663010566461 is 164665010366.

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

It can be written as a sum of positive squares in 2 ways, for example, as 360697537561 + 302313028900 = 600581^2 + 549830^2 .

It is a cyclic number.

It is not a de Polignac number, because 663010566461 - 2⁶ = 663010566397 is a prime.

It is a super-2 number, since 2×663010566461² (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 (663010566431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293626226 + ... + 293628483.

It is an arithmetic number, because the mean of its divisors is an integer number (165899455575).

Almost surely, 2^663010566461 is an apocalyptic number.

It is an amenable number.

663010566461 is a deficient number, since it is larger than the sum of its proper divisors (587255839).

663010566461 is a wasteful number, since it uses less digits than its factorization.

663010566461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587255838.

The product of its (nonzero) digits is 466560, while the sum is 44.

The spelling of 663010566461 in words is "six hundred sixty-three billion, ten million, five hundred sixty-six thousand, four hundred sixty-one".