63865112096851 has 24 divisors (see below), whose sum is σ = 71554869732960. Its totient is φ = 56908051200000.

The previous prime is 63865112096827. The next prime is 63865112096867. The reversal of 63865112096851 is 15869021156836.

It is a happy number.

It is not a de Polignac number, because 63865112096851 - 2¹¹ = 63865112094803 is a prime.

It is a super-4 number, since 4×63865112096851⁴ (a number of 56 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63865112096851.

It is not an unprimeable number, because it can be changed into a prime (63865112096801) 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, 22948851 + ... + 25580851.

It is an arithmetic number, because the mean of its divisors is an integer number (2981452905540).

Almost surely, 2^{63865112096851} is an apocalyptic number.

63865112096851 is a deficient number, since it is larger than the sum of its proper divisors (7689757636109).

63865112096851 is a wasteful number, since it uses less digits than its factorization.

63865112096851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2637007 (or 2636994 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 61.

The spelling of 63865112096851 in words is "sixty-three trillion, eight hundred sixty-five billion, one hundred twelve million, ninety-six thousand, eight hundred fifty-one".