3806778555858 has 16 divisors (see below), whose sum is σ = 7613602430976. Its totient is φ = 1268918632080.

The previous prime is 3806778555841. The next prime is 3806778555889. The reversal of 3806778555858 is 8585558776083.

It is a super-3 number, since 3×3806778555858³ (a number of 39 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 3806778555858.

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, 742866 + ... + 2857517.

It is an arithmetic number, because the mean of its divisors is an integer number (475850151936).

Almost surely, 2^{3806778555858} is an apocalyptic number.

3806778555858 is an abundant number, since it is smaller than the sum of its proper divisors (3806823875118).

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

3806778555858 is a wasteful number, since it uses less digits than its factorization.

3806778555858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3776609.

The product of its (nonzero) digits is 2257920000, while the sum is 75.

The spelling of 3806778555858 in words is "three trillion, eight hundred six billion, seven hundred seventy-eight million, five hundred fifty-five thousand, eight hundred fifty-eight".