10865643156 has 24 divisors (see below), whose sum is σ = 28170186240. Its totient is φ = 3621881016.

The previous prime is 10865643133. The next prime is 10865643157. The reversal of 10865643156 is 65134656801.

10865643156 is a `hidden beast` number, since 1 + 0 + 8 + 6 + 564 + 31 + 56 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10865643157) 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, 50303796 + ... + 50304011.

It is an arithmetic number, because the mean of its divisors is an integer number (1173757760).

Almost surely, 2^10865643156 is an apocalyptic number.

It is an amenable number.

10865643156 is an abundant number, since it is smaller than the sum of its proper divisors (17304543084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10865643156 is a wasteful number, since it uses less digits than its factorization.

10865643156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100607820 (or 100607812 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 10865643156 in words is "ten billion, eight hundred sixty-five million, six hundred forty-three thousand, one hundred fifty-six".