4634747066581 has 2 divisors, whose sum is σ = 4634747066582. Its totient is φ = 4634747066580.

The previous prime is 4634747066569. The next prime is 4634747066597. The reversal of 4634747066581 is 1856607474364.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4387977562500 + 246769504081 = 2094750^2 + 496759^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4634747066581 is a prime.

It is a super-2 number, since 2×4634747066581² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4634747066381) 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 as a sum of consecutive naturals, namely, 2317373533290 + 2317373533291.

It is an arithmetic number, because the mean of its divisors is an integer number (2317373533291).

Almost surely, 2^{4634747066581} is an apocalyptic number.

It is an amenable number.

4634747066581 is a deficient number, since it is larger than the sum of its proper divisors (1).

4634747066581 is an equidigital number, since it uses as much as digits as its factorization.

4634747066581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81285120, while the sum is 61.

The spelling of 4634747066581 in words is "four trillion, six hundred thirty-four billion, seven hundred forty-seven million, sixty-six thousand, five hundred eighty-one".