387883675321 has 4 divisors (see below), whose sum is σ = 401258974500. Its totient is φ = 374508376144.

The previous prime is 387883675303. The next prime is 387883675351. The reversal of 387883675321 is 123576388783.

It is a happy number.

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 74059635321 + 313824040000 = 272139^2 + 560200^2 .

It is not a de Polignac number, because 387883675321 - 2²¹ = 387881578169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 387883675321.

It is not an unprimeable number, because it can be changed into a prime (387883675351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6687649546 + ... + 6687649603.

It is an arithmetic number, because the mean of its divisors is an integer number (100314743625).

Almost surely, 2^387883675321 is an apocalyptic number.

It is an amenable number.

387883675321 is a deficient number, since it is larger than the sum of its proper divisors (13375299179).

387883675321 is a wasteful number, since it uses less digits than its factorization.

387883675321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13375299178.

The product of its digits is 40642560, while the sum is 61.

The spelling of 387883675321 in words is "three hundred eighty-seven billion, eight hundred eighty-three million, six hundred seventy-five thousand, three hundred twenty-one".