38816508648845 has 8 divisors (see below), whose sum is σ = 46579872918264. Its totient is φ = 31053165225984.

The previous prime is 38816508648829. The next prime is 38816508648851. The reversal of 38816508648845 is 54884680561883.

It can be written as a sum of positive squares in 4 ways, for example, as 10668199620841 + 28148309028004 = 3266221^2 + 5305498^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38816508648845 - 2⁴ = 38816508648829 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 771284 + ... + 8844653.

It is an arithmetic number, because the mean of its divisors is an integer number (5822484114783).

Almost surely, 2^{38816508648845} is an apocalyptic number.

It is an amenable number.

38816508648845 is a deficient number, since it is larger than the sum of its proper divisors (7763364269419).

38816508648845 is an equidigital number, since it uses as much as digits as its factorization.

38816508648845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10423279.

The product of its (nonzero) digits is 1415577600, while the sum is 74.

The spelling of 38816508648845 in words is "thirty-eight trillion, eight hundred sixteen billion, five hundred eight million, six hundred forty-eight thousand, eight hundred forty-five".