38308903686145 has 4 divisors (see below), whose sum is σ = 45970684423380. Its totient is φ = 30647122948912.

The previous prime is 38308903686133. The next prime is 38308903686149. The reversal of 38308903686145 is 54168630980383.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16303497742081 + 22005405944064 = 4037759^2 + 4690992^2 .

It is a cyclic number.

It is not a de Polignac number, because 38308903686145 - 2²⁹ = 38308366815233 is a prime.

It is a super-3 number, since 3×38308903686145³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (38308903686149) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3830890368610 + ... + 3830890368619.

It is an arithmetic number, because the mean of its divisors is an integer number (11492671105845).

Almost surely, 2^{38308903686145} is an apocalyptic number.

It is an amenable number.

38308903686145 is a deficient number, since it is larger than the sum of its proper divisors (7661780737235).

38308903686145 is an equidigital number, since it uses as much as digits as its factorization.

38308903686145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7661780737234.

The product of its (nonzero) digits is 89579520, while the sum is 64.

The spelling of 38308903686145 in words is "thirty-eight trillion, three hundred eight billion, nine hundred three million, six hundred eighty-six thousand, one hundred forty-five".