3778817080856 has 32 divisors (see below), whose sum is σ = 7113189258000. Its totient is φ = 1881967312896.

The previous prime is 3778817080853. The next prime is 3778817080867. The reversal of 3778817080856 is 6580807188773.

It is a super-2 number, since 2×3778817080856² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3778817080853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72630980 + ... + 72682988.

Almost surely, 2^{3778817080856} is an apocalyptic number.

It is an amenable number.

3778817080856 is a deficient number, since it is larger than the sum of its proper divisors (3334372177144).

3778817080856 is a wasteful number, since it uses less digits than its factorization.

3778817080856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87611 (or 87607 counting only the distinct ones).

The product of its (nonzero) digits is 126443520, while the sum is 68.

The spelling of 3778817080856 in words is "three trillion, seven hundred seventy-eight billion, eight hundred seventeen million, eighty thousand, eight hundred fifty-six".