505034567778 has 64 divisors (see below), whose sum is σ = 1137161233152. Its totient is φ = 148363902720.

The previous prime is 505034567759. The next prime is 505034567789. The reversal of 505034567778 is 877765430505.

It is a super-2 number, since 2×505034567778² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 710376 + ... + 1230732.

It is an arithmetic number, because the mean of its divisors is an integer number (17768144268).

Almost surely, 2^505034567778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 505034567778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (568580616576).

505034567778 is an abundant number, since it is smaller than the sum of its proper divisors (632126665374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505034567778 is a wasteful number, since it uses less digits than its factorization.

505034567778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520939.

The product of its (nonzero) digits is 24696000, while the sum is 57.

The spelling of 505034567778 in words is "five hundred five billion, thirty-four million, five hundred sixty-seven thousand, seven hundred seventy-eight".