4664648464681 has 2 divisors, whose sum is σ = 4664648464682. Its totient is φ = 4664648464680.

The previous prime is 4664648464673. The next prime is 4664648464733. The reversal of 4664648464681 is 1864648464664.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4658435872281 + 6212592400 = 2158341^2 + 78820^2 .

It is a cyclic number.

It is not a de Polignac number, because 4664648464681 - 2³ = 4664648464673 is a prime.

It is a super-2 number, since 2×4664648464681² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4664648464981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2332324232340 + 2332324232341.

It is an arithmetic number, because the mean of its divisors is an integer number (2332324232341).

Almost surely, 2^{4664648464681} is an apocalyptic number.

It is an amenable number.

4664648464681 is a deficient number, since it is larger than the sum of its proper divisors (1).

4664648464681 is an equidigital number, since it uses as much as digits as its factorization.

4664648464681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 509607936, while the sum is 67.

The spelling of 4664648464681 in words is "four trillion, six hundred sixty-four billion, six hundred forty-eight million, four hundred sixty-four thousand, six hundred eighty-one".