405640354753 has 2 divisors, whose sum is σ = 405640354754. Its totient is φ = 405640354752.

The previous prime is 405640354733. The next prime is 405640354787. The reversal of 405640354753 is 357453046504.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 403057377424 + 2582977329 = 634868^2 + 50823^2 .

It is a cyclic number.

It is not a de Polignac number, because 405640354753 - 2²⁵ = 405606800321 is a prime.

It is not a weakly prime, because it can be changed into another prime (405640354733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202820177376 + 202820177377.

It is an arithmetic number, because the mean of its divisors is an integer number (202820177377).

Almost surely, 2^405640354753 is an apocalyptic number.

It is an amenable number.

405640354753 is a deficient number, since it is larger than the sum of its proper divisors (1).

405640354753 is an equidigital number, since it uses as much as digits as its factorization.

405640354753 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024000, while the sum is 46.

The spelling of 405640354753 in words is "four hundred five billion, six hundred forty million, three hundred fifty-four thousand, seven hundred fifty-three".