3878724268784 has 40 divisors (see below), whose sum is σ = 7676884719360. Its totient is φ = 1897613828288.

The previous prime is 3878724268781. The next prime is 3878724268787. The reversal of 3878724268784 is 4878624278783.

It is an interprime number because it is at equal distance from previous prime (3878724268781) and next prime (3878724268787).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3878724268781) 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, 2292707 + ... + 3607485.

It is an arithmetic number, because the mean of its divisors is an integer number (191922117984).

Almost surely, 2^{3878724268784} is an apocalyptic number.

It is an amenable number.

3878724268784 is a deficient number, since it is larger than the sum of its proper divisors (3798160450576).

3878724268784 is a wasteful number, since it uses less digits than its factorization.

3878724268784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318757 (or 1318751 counting only the distinct ones).

The product of its digits is 1618477056, while the sum is 74.

Subtracting 3878724268784 from its reverse (4878624278783), we obtain a palindrome (999900009999).

The spelling of 3878724268784 in words is "three trillion, eight hundred seventy-eight billion, seven hundred twenty-four million, two hundred sixty-eight thousand, seven hundred eighty-four".