10863971851 has 4 divisors (see below), whose sum is σ = 11238591600. Its totient is φ = 10489352104.

The previous prime is 10863971827. The next prime is 10863971863. The reversal of 10863971851 is 15817936801.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15817936801 = 659 ⋅24002939.

It is a cyclic number.

It is not a de Polignac number, because 10863971851 - 2¹⁵ = 10863939083 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10863971795 and 10863971804.

It is not an unprimeable number, because it can be changed into a prime (10863971821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187309831 + ... + 187309888.

It is an arithmetic number, because the mean of its divisors is an integer number (2809647900).

Almost surely, 2^10863971851 is an apocalyptic number.

10863971851 is a deficient number, since it is larger than the sum of its proper divisors (374619749).

10863971851 is an equidigital number, since it uses as much as digits as its factorization.

10863971851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374619748.

The product of its (nonzero) digits is 362880, while the sum is 49.

The spelling of 10863971851 in words is "ten billion, eight hundred sixty-three million, nine hundred seventy-one thousand, eight hundred fifty-one".