387171683867 has 4 divisors (see below), whose sum is σ = 399661093056. Its totient is φ = 374682274680.

The previous prime is 387171683803. The next prime is 387171683869. The reversal of 387171683867 is 768386171783.

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

It is a cyclic number.

It is not a de Polignac number, because 387171683867 - 2⁶ = 387171683803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (387171683869) 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, 6244704548 + ... + 6244704609.

It is an arithmetic number, because the mean of its divisors is an integer number (99915273264).

Almost surely, 2^387171683867 is an apocalyptic number.

387171683867 is a deficient number, since it is larger than the sum of its proper divisors (12489409189).

387171683867 is a wasteful number, since it uses less digits than its factorization.

387171683867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12489409188.

The product of its digits is 56899584, while the sum is 65.

The spelling of 387171683867 in words is "three hundred eighty-seven billion, one hundred seventy-one million, six hundred eighty-three thousand, eight hundred sixty-seven".