505435085779 has 16 divisors (see below), whose sum is σ = 557819982720. Its totient is φ = 454988874240.

The previous prime is 505435085777. The next prime is 505435085789. The reversal of 505435085779 is 977580534505.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 505435085779 - 2¹ = 505435085777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (505435085773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1110487 + ... + 1498015.

It is an arithmetic number, because the mean of its divisors is an integer number (34863748920).

Almost surely, 2^505435085779 is an apocalyptic number.

505435085779 is a deficient number, since it is larger than the sum of its proper divisors (52384896941).

505435085779 is a wasteful number, since it uses less digits than its factorization.

505435085779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390030.

The product of its (nonzero) digits is 26460000, while the sum is 58.

The spelling of 505435085779 in words is "five hundred five billion, four hundred thirty-five million, eighty-five thousand, seven hundred seventy-nine".