3878338706506 has 16 divisors (see below), whose sum is σ = 6622301665728. Its totient is φ = 1686234220000.

The previous prime is 3878338706503. The next prime is 3878338706509. The reversal of 3878338706506 is 6056078338783.

It is an interprime number because it is at equal distance from previous prime (3878338706503) and next prime (3878338706509).

It is a super-2 number, since 2×3878338706506² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3878338706503) 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, 3832349995 + ... + 3832351006.

It is an arithmetic number, because the mean of its divisors is an integer number (413893854108).

Almost surely, 2^{3878338706506} is an apocalyptic number.

3878338706506 is a deficient number, since it is larger than the sum of its proper divisors (2743962959222).

3878338706506 is a wasteful number, since it uses less digits than its factorization.

3878338706506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7664701037.

The product of its (nonzero) digits is 121927680, while the sum is 64.

The spelling of 3878338706506 in words is "three trillion, eight hundred seventy-eight billion, three hundred thirty-eight million, seven hundred six thousand, five hundred six".