4660885365581 has 2 divisors, whose sum is σ = 4660885365582. Its totient is φ = 4660885365580.

The previous prime is 4660885365559. The next prime is 4660885365583. The reversal of 4660885365581 is 1855635880664.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2569419849481 + 2091465516100 = 1602941^2 + 1446190^2 .

It is a cyclic number.

It is not a de Polignac number, because 4660885365581 - 2³⁰ = 4659811623757 is a prime.

It is a super-2 number, since 2×4660885365581² (a number of 26 digits) contains 22 as substring.

Together with 4660885365583, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4660885365583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2330442682790 + 2330442682791.

It is an arithmetic number, because the mean of its divisors is an integer number (2330442682791).

Almost surely, 2^{4660885365581} is an apocalyptic number.

It is an amenable number.

4660885365581 is a deficient number, since it is larger than the sum of its proper divisors (1).

4660885365581 is an equidigital number, since it uses as much as digits as its factorization.

4660885365581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 165888000, while the sum is 65.

The spelling of 4660885365581 in words is "four trillion, six hundred sixty billion, eight hundred eighty-five million, three hundred sixty-five thousand, five hundred eighty-one".