38778305255856 has 120 divisors (see below), whose sum is σ = 108614647748880. Its totient is φ = 12915475619328.

The previous prime is 38778305255849. The next prime is 38778305255867. The reversal of 38778305255856 is 65855250387783.

38778305255856 is a `hidden beast` number, since 3 + 8 + 7 + 7 + 8 + 30 + 5 + 2 + 5 + 585 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 969946875 + ... + 969986853.

It is an arithmetic number, because the mean of its divisors is an integer number (905122064574).

Almost surely, 2^{38778305255856} is an apocalyptic number.

38778305255856 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

38778305255856 is an abundant number, since it is smaller than the sum of its proper divisors (69836342493024).

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

38778305255856 is a wasteful number, since it uses less digits than its factorization.

38778305255856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45363 (or 45354 counting only the distinct ones).

The product of its (nonzero) digits is 1693440000, while the sum is 72.

The spelling of 38778305255856 in words is "thirty-eight trillion, seven hundred seventy-eight billion, three hundred five million, two hundred fifty-five thousand, eight hundred fifty-six".