3865012437256 has 32 divisors (see below), whose sum is σ = 7678832702400. Its totient is φ = 1818670881600.

The previous prime is 3865012437233. The next prime is 3865012437259. The reversal of 3865012437256 is 6527342105683.

It is a super-2 number, since 2×3865012437256² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3865012437259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84174775 + ... + 84220678.

It is an arithmetic number, because the mean of its divisors is an integer number (239963521950).

Almost surely, 2^{3865012437256} is an apocalyptic number.

It is an amenable number.

3865012437256 is a deficient number, since it is larger than the sum of its proper divisors (3813820265144).

3865012437256 is a wasteful number, since it uses less digits than its factorization.

3865012437256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168395629 (or 168395625 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 52.

The spelling of 3865012437256 in words is "three trillion, eight hundred sixty-five billion, twelve million, four hundred thirty-seven thousand, two hundred fifty-six".