3878865570771 has 24 divisors (see below), whose sum is σ = 5815787730480. Its totient is φ = 2488219707456.

The previous prime is 3878865570689. The next prime is 3878865570791. The reversal of 3878865570771 is 1770755688783.

It is not a de Polignac number, because 3878865570771 - 2³⁰ = 3877791828947 is a prime.

It is a super-2 number, since 2×3878865570771² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3878865570771.

It is not an unprimeable number, because it can be changed into a prime (3878865570791) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25284541 + ... + 25437486.

It is an arithmetic number, because the mean of its divisors is an integer number (242324488770).

Almost surely, 2^{3878865570771} is an apocalyptic number.

3878865570771 is a deficient number, since it is larger than the sum of its proper divisors (1936922159709).

3878865570771 is a wasteful number, since it uses less digits than its factorization.

3878865570771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50722355 (or 50722352 counting only the distinct ones).

The product of its (nonzero) digits is 553190400, while the sum is 72.

The spelling of 3878865570771 in words is "three trillion, eight hundred seventy-eight billion, eight hundred sixty-five million, five hundred seventy thousand, seven hundred seventy-one".