4581318381671 has 2 divisors, whose sum is σ = 4581318381672. Its totient is φ = 4581318381670.

The previous prime is 4581318381649. The next prime is 4581318381697. The reversal of 4581318381671 is 1761838131854.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4581318381671 - 2¹⁴ = 4581318365287 is a prime.

It is a super-2 number, since 2×4581318381671² (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 (4581318381641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2290659190835 + 2290659190836.

It is an arithmetic number, because the mean of its divisors is an integer number (2290659190836).

Almost surely, 2^{4581318381671} is an apocalyptic number.

4581318381671 is a deficient number, since it is larger than the sum of its proper divisors (1).

4581318381671 is an equidigital number, since it uses as much as digits as its factorization.

4581318381671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3870720, while the sum is 56.

The spelling of 4581318381671 in words is "four trillion, five hundred eighty-one billion, three hundred eighteen million, three hundred eighty-one thousand, six hundred seventy-one".