3806778556078 has 32 divisors (see below), whose sum is σ = 5860305158400. Its totient is φ = 1853947460736.

The previous prime is 3806778556073. The next prime is 3806778556079. The reversal of 3806778556078 is 8706558776083.

It is a junction number, because it is equal to n+sod(n) for n = 3806778555998 and 3806778556016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3806778556073) 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, 41009025 + ... + 41101747.

It is an arithmetic number, because the mean of its divisors is an integer number (183134536200).

Almost surely, 2^{3806778556078} is an apocalyptic number.

3806778556078 is a deficient number, since it is larger than the sum of its proper divisors (2053526602322).

3806778556078 is a wasteful number, since it uses less digits than its factorization.

3806778556078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95976.

The product of its (nonzero) digits is 474163200, while the sum is 70.

The spelling of 3806778556078 in words is "three trillion, eight hundred six billion, seven hundred seventy-eight million, five hundred fifty-six thousand, seventy-eight".