3856340568613 has 4 divisors (see below), whose sum is σ = 4152982150828. Its totient is φ = 3559698986400.

The previous prime is 3856340568593. The next prime is 3856340568643. The reversal of 3856340568613 is 3168650436583.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2454915511489 + 1401425057124 = 1566817^2 + 1183818^2 .

It is a cyclic number.

It is not a de Polignac number, because 3856340568613 - 2²⁵ = 3856307014181 is a prime.

It is a super-2 number, since 2×3856340568613² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3856340568643) 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 3 ways as a sum of consecutive naturals, for example, 148320791088 + ... + 148320791113.

It is an arithmetic number, because the mean of its divisors is an integer number (1038245537707).

Almost surely, 2^{3856340568613} is an apocalyptic number.

It is an amenable number.

3856340568613 is a deficient number, since it is larger than the sum of its proper divisors (296641582215).

3856340568613 is a wasteful number, since it uses less digits than its factorization.

3856340568613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296641582214.

The product of its (nonzero) digits is 37324800, while the sum is 58.

The spelling of 3856340568613 in words is "three trillion, eight hundred fifty-six billion, three hundred forty million, five hundred sixty-eight thousand, six hundred thirteen".