10281277665 has 24 divisors (see below), whose sum is σ = 17934402408. Its totient is φ = 5448418560.

The previous prime is 10281277621. The next prime is 10281277667. The reversal of 10281277665 is 56677218201.

10281277665 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2768548689 + 7512728976 = 52617^2 + 86676^2 .

It is not a de Polignac number, because 10281277665 - 2¹¹ = 10281275617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 10281277665.

It is not an unprimeable number, because it can be changed into a prime (10281277667) 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, 720556 + ... + 734685.

It is an arithmetic number, because the mean of its divisors is an integer number (747266767).

Almost surely, 2^10281277665 is an apocalyptic number.

10281277665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10281277665 is a deficient number, since it is larger than the sum of its proper divisors (7653124743).

10281277665 is a wasteful number, since it uses less digits than its factorization.

10281277665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455409 (or 1455406 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The spelling of 10281277665 in words is "ten billion, two hundred eighty-one million, two hundred seventy-seven thousand, six hundred sixty-five".