3864780377639 has 8 divisors (see below), whose sum is σ = 3947065694208. Its totient is φ = 3782497392280.

The previous prime is 3864780377609. The next prime is 3864780377641. The reversal of 3864780377639 is 9367730874683.

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 3864780377639 - 2¹² = 3864780373543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3864780377609) 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 7 ways as a sum of consecutive naturals, for example, 3000194 + ... + 4090320.

It is an arithmetic number, because the mean of its divisors is an integer number (493383211776).

Almost surely, 2^{3864780377639} is an apocalyptic number.

3864780377639 is a deficient number, since it is larger than the sum of its proper divisors (82285316569).

3864780377639 is a wasteful number, since it uses less digits than its factorization.

3864780377639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165605.

The product of its (nonzero) digits is 768144384, while the sum is 71.

The spelling of 3864780377639 in words is "three trillion, eight hundred sixty-four billion, seven hundred eighty million, three hundred seventy-seven thousand, six hundred thirty-nine".