578505765878 has 16 divisors (see below), whose sum is σ = 918829654704. Its totient is φ = 272230191360.

The previous prime is 578505765847. The next prime is 578505765883. The reversal of 578505765878 is 878567505875.

It is a super-2 number, since 2×578505765878² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1058018 + ... + 1508778.

It is an arithmetic number, because the mean of its divisors is an integer number (57426853419).

Almost surely, 2^578505765878 is an apocalyptic number.

578505765878 is a deficient number, since it is larger than the sum of its proper divisors (340323888826).

578505765878 is a wasteful number, since it uses less digits than its factorization.

578505765878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488527.

The product of its (nonzero) digits is 658560000, while the sum is 71.

The spelling of 578505765878 in words is "five hundred seventy-eight billion, five hundred five million, seven hundred sixty-five thousand, eight hundred seventy-eight".