3856765494765 has 16 divisors (see below), whose sum is σ = 6173583372288. Its totient is φ = 2056022070336.

The previous prime is 3856765494763. The next prime is 3856765494779. The reversal of 3856765494765 is 5674945676583.

It is not a de Polignac number, because 3856765494765 - 2¹ = 3856765494763 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3856765494763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57435757 + ... + 57502866.

It is an arithmetic number, because the mean of its divisors is an integer number (385848960768).

Almost surely, 2^{3856765494765} is an apocalyptic number.

It is an amenable number.

3856765494765 is a deficient number, since it is larger than the sum of its proper divisors (2316817877523).

3856765494765 is a wasteful number, since it uses less digits than its factorization.

3856765494765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114940868.

The product of its digits is 4572288000, while the sum is 75.

The spelling of 3856765494765 in words is "three trillion, eight hundred fifty-six billion, seven hundred sixty-five million, four hundred ninety-four thousand, seven hundred sixty-five".