3867885817647 has 8 divisors (see below), whose sum is σ = 5296564363056. Its totient is φ = 2508898908672.

The previous prime is 3867885817633. The next prime is 3867885817673. The reversal of 3867885817647 is 7467185887683.

3867885817647 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3867885817647 - 2⁷ = 3867885817519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3867885817447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17422908978 + ... + 17422909199.

It is an arithmetic number, because the mean of its divisors is an integer number (662070545382).

Almost surely, 2^{3867885817647} is an apocalyptic number.

3867885817647 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

3867885817647 is a deficient number, since it is larger than the sum of its proper divisors (1428678545409).

3867885817647 is a wasteful number, since it uses less digits than its factorization.

3867885817647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34845818217.

The product of its digits is 3034644480, while the sum is 78.

The spelling of 3867885817647 in words is "three trillion, eight hundred sixty-seven billion, eight hundred eighty-five million, eight hundred seventeen thousand, six hundred forty-seven".