3856519801071 has 24 divisors (see below), whose sum is σ = 6380068597760. Its totient is φ = 2198965917456.

The previous prime is 3856519801039. The next prime is 3856519801109. The reversal of 3856519801071 is 1701089156583.

It is a happy number.

3856519801071 is a `hidden beast` number, since 3 + 8 + 56 + 519 + 8 + 0 + 1 + 0 + 71 = 666.

It is not a de Polignac number, because 3856519801071 - 2⁵ = 3856519801039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3856519800999 and 3856519801017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3856519801171) 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, 66077311 + ... + 66135648.

Almost surely, 2^{3856519801071} is an apocalyptic number.

3856519801071 is a deficient number, since it is larger than the sum of its proper divisors (2523548796689).

3856519801071 is a wasteful number, since it uses less digits than its factorization.

3856519801071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132213435 (or 132213432 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 54.

The spelling of 3856519801071 in words is "three trillion, eight hundred fifty-six billion, five hundred nineteen million, eight hundred one thousand, seventy-one".