418324450681 has 2 divisors, whose sum is σ = 418324450682. Its totient is φ = 418324450680.

The previous prime is 418324450637. The next prime is 418324450697. The reversal of 418324450681 is 186054423814.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 347150748025 + 71173702656 = 589195^2 + 266784^2 .

It is a cyclic number.

It is not a de Polignac number, because 418324450681 - 2²⁵ = 418290896249 is a prime.

It is a super-2 number, since 2×418324450681² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (418324450601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209162225340 + 209162225341.

It is an arithmetic number, because the mean of its divisors is an integer number (209162225341).

Almost surely, 2^418324450681 is an apocalyptic number.

It is an amenable number.

418324450681 is a deficient number, since it is larger than the sum of its proper divisors (1).

418324450681 is an equidigital number, since it uses as much as digits as its factorization.

418324450681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 737280, while the sum is 46.

The spelling of 418324450681 in words is "four hundred eighteen billion, three hundred twenty-four million, four hundred fifty thousand, six hundred eighty-one".