406735537609 has 2 divisors, whose sum is σ = 406735537610. Its totient is φ = 406735537608.

The previous prime is 406735537601. The next prime is 406735537627. The reversal of 406735537609 is 906735537604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 372584497609 + 34151040000 = 610397^2 + 184800^2 .

It is a cyclic number.

It is not a de Polignac number, because 406735537609 - 2³ = 406735537601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 406735537609.

It is not a weakly prime, because it can be changed into another prime (406735537601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203367768804 + 203367768805.

It is an arithmetic number, because the mean of its divisors is an integer number (203367768805).

Almost surely, 2^406735537609 is an apocalyptic number.

It is an amenable number.

406735537609 is a deficient number, since it is larger than the sum of its proper divisors (1).

406735537609 is an equidigital number, since it uses as much as digits as its factorization.

406735537609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14288400, while the sum is 55.

The spelling of 406735537609 in words is "four hundred six billion, seven hundred thirty-five million, five hundred thirty-seven thousand, six hundred nine".