3865012448881 has 16 divisors (see below), whose sum is σ = 3960484750080. Its totient is φ = 3770096497920.

The previous prime is 3865012448879. The next prime is 3865012448887. The reversal of 3865012448881 is 1888442105683.

It is a cyclic number.

It is not a de Polignac number, because 3865012448881 - 2¹ = 3865012448879 is a prime.

It is a super-2 number, since 2×3865012448881² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3865012448887) 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, 84290521 + ... + 84336361.

It is an arithmetic number, because the mean of its divisors is an integer number (247530296880).

Almost surely, 2^{3865012448881} is an apocalyptic number.

It is an amenable number.

3865012448881 is a deficient number, since it is larger than the sum of its proper divisors (95472301199).

3865012448881 is a wasteful number, since it uses less digits than its factorization.

3865012448881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51864.

The product of its (nonzero) digits is 11796480, while the sum is 58.

It can be divided in two parts, 386501 and 2448881, that added together give a palindrome (2835382).

The spelling of 3865012448881 in words is "three trillion, eight hundred sixty-five billion, twelve million, four hundred forty-eight thousand, eight hundred eighty-one".