406367653649 has 2 divisors, whose sum is σ = 406367653650. Its totient is φ = 406367653648.

The previous prime is 406367653621. The next prime is 406367653663. The reversal of 406367653649 is 946356763604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 403057377424 + 3310276225 = 634868^2 + 57535^2 .

It is a cyclic number.

It is not a de Polignac number, because 406367653649 - 2¹⁶ = 406367588113 is a prime.

It is not a weakly prime, because it can be changed into another prime (406367653049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203183826824 + 203183826825.

It is an arithmetic number, because the mean of its divisors is an integer number (203183826825).

Almost surely, 2^406367653649 is an apocalyptic number.

It is an amenable number.

406367653649 is a deficient number, since it is larger than the sum of its proper divisors (1).

406367653649 is an equidigital number, since it uses as much as digits as its factorization.

406367653649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58786560, while the sum is 59.

The spelling of 406367653649 in words is "four hundred six billion, three hundred sixty-seven million, six hundred fifty-three thousand, six hundred forty-nine".