10500865639 has 8 divisors (see below), whose sum is σ = 11458119168. Its totient is φ = 9544050360.

The previous prime is 10500865619. The next prime is 10500865657. The reversal of 10500865639 is 93656800501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10500865639 - 2¹¹ = 10500863591 is a prime.

It is a super-2 number, since 2×10500865639² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10500865595 and 10500865604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10500865619) 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, 58417 + ... + 156250.

It is an arithmetic number, because the mean of its divisors is an integer number (1432264896).

Almost surely, 2^10500865639 is an apocalyptic number.

10500865639 is a deficient number, since it is larger than the sum of its proper divisors (957253529).

10500865639 is a wasteful number, since it uses less digits than its factorization.

10500865639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219125.

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 10500865639 in words is "ten billion, five hundred million, eight hundred sixty-five thousand, six hundred thirty-nine".