10805865128125 has 12 divisors (see below), whose sum is σ = 13506466944852. Its totient is φ = 8644692100000.

The previous prime is 10805865128119. The next prime is 10805865128137. The reversal of 10805865128125 is 52182156850801.

It can be written as a sum of positive squares in 6 ways, for example, as 8258531022756 + 2547334105369 = 2873766^2 + 1596037^2 .

It is not a de Polignac number, because 10805865128125 - 2⁷ = 10805865127997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1728935296 + ... + 1728941545.

It is an arithmetic number, because the mean of its divisors is an integer number (1125538912071).

Almost surely, 2^{10805865128125} is an apocalyptic number.

It is an amenable number.

10805865128125 is a deficient number, since it is larger than the sum of its proper divisors (2700601816727).

10805865128125 is an frugal number, since it uses more digits than its factorization.

10805865128125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3457876866 (or 3457876846 counting only the distinct ones).

The product of its (nonzero) digits is 1536000, while the sum is 52.

The spelling of 10805865128125 in words is "ten trillion, eight hundred five billion, eight hundred sixty-five million, one hundred twenty-eight thousand, one hundred twenty-five".