406883543681 has 2 divisors, whose sum is σ = 406883543682. Its totient is φ = 406883543680.

The previous prime is 406883543663. The next prime is 406883543713. The reversal of 406883543681 is 186345388604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210115891456 + 196767652225 = 458384^2 + 443585^2 .

It is a cyclic number.

It is not a de Polignac number, because 406883543681 - 2²² = 406879349377 is a prime.

It is a super-2 number, since 2×406883543681² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (406883540681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203441771840 + 203441771841.

It is an arithmetic number, because the mean of its divisors is an integer number (203441771841).

Almost surely, 2^406883543681 is an apocalyptic number.

It is an amenable number.

406883543681 is a deficient number, since it is larger than the sum of its proper divisors (1).

406883543681 is an equidigital number, since it uses as much as digits as its factorization.

406883543681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13271040, while the sum is 56.

The spelling of 406883543681 in words is "four hundred six billion, eight hundred eighty-three million, five hundred forty-three thousand, six hundred eighty-one".