406262167321 has 2 divisors, whose sum is σ = 406262167322. Its totient is φ = 406262167320.

The previous prime is 406262167307. The next prime is 406262167357. The reversal of 406262167321 is 123761262604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 406049328400 + 212838921 = 637220^2 + 14589^2 .

It is a cyclic number.

It is not a de Polignac number, because 406262167321 - 2¹¹ = 406262165273 is a prime.

It is not a weakly prime, because it can be changed into another prime (406262165321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203131083660 + 203131083661.

It is an arithmetic number, because the mean of its divisors is an integer number (203131083661).

Almost surely, 2^406262167321 is an apocalyptic number.

It is an amenable number.

406262167321 is a deficient number, since it is larger than the sum of its proper divisors (1).

406262167321 is an equidigital number, since it uses as much as digits as its factorization.

406262167321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 406262167321 in words is "four hundred six billion, two hundred sixty-two million, one hundred sixty-seven thousand, three hundred twenty-one".