406362243181 has 2 divisors, whose sum is σ = 406362243182. Its totient is φ = 406362243180.

The previous prime is 406362243163. The next prime is 406362243197. The reversal of 406362243181 is 181342263604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 357913831081 + 48448412100 = 598259^2 + 220110^2 .

It is a cyclic number.

It is not a de Polignac number, because 406362243181 - 2⁹ = 406362242669 is a prime.

It is a super-2 number, since 2×406362243181² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406362213181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203181121590 + 203181121591.

It is an arithmetic number, because the mean of its divisors is an integer number (203181121591).

Almost surely, 2^406362243181 is an apocalyptic number.

It is an amenable number.

406362243181 is a deficient number, since it is larger than the sum of its proper divisors (1).

406362243181 is an equidigital number, since it uses as much as digits as its factorization.

406362243181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 406362243181 in words is "four hundred six billion, three hundred sixty-two million, two hundred forty-three thousand, one hundred eighty-one".