3867066651845 has 8 divisors (see below), whose sum is σ = 4683053193720. Its totient is φ = 3065271180480.

The previous prime is 3867066651823. The next prime is 3867066651863. The reversal of 3867066651845 is 5481566607683.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 296773263361 + 3570293388484 = 544769^2 + 1889522^2 .

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

It is not a de Polignac number, because 3867066651845 - 2¹⁸ = 3867066389701 is a prime.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 3547767026 + ... + 3547768115.

It is an arithmetic number, because the mean of its divisors is an integer number (585381649215).

Almost surely, 2^{3867066651845} is an apocalyptic number.

It is an amenable number.

3867066651845 is a deficient number, since it is larger than the sum of its proper divisors (815986541875).

3867066651845 is a wasteful number, since it uses less digits than its factorization.

3867066651845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7095535255.

The product of its (nonzero) digits is 174182400, while the sum is 65.

The spelling of 3867066651845 in words is "three trillion, eight hundred sixty-seven billion, sixty-six million, six hundred fifty-one thousand, eight hundred forty-five".