505555406435 has 16 divisors (see below), whose sum is σ = 635078845440. Its totient is φ = 385615839840.

The previous prime is 505555406407. The next prime is 505555406497. The reversal of 505555406435 is 534604555505.

It is a de Polignac number, because none of the positive numbers 2^k-505555406435 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 505555406435.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7031975 + ... + 7103504.

It is an arithmetic number, because the mean of its divisors is an integer number (39692427840).

Almost surely, 2^505555406435 is an apocalyptic number.

505555406435 is a deficient number, since it is larger than the sum of its proper divisors (129523439005).

505555406435 is a wasteful number, since it uses less digits than its factorization.

505555406435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14135818.

The product of its (nonzero) digits is 4500000, while the sum is 47.

The spelling of 505555406435 in words is "five hundred five billion, five hundred fifty-five million, four hundred six thousand, four hundred thirty-five".