10402368065 has 8 divisors (see below), whose sum is σ = 12483690408. Its totient is φ = 8321328640.

The previous prime is 10402368061. The next prime is 10402368077. The reversal of 10402368065 is 56086320401.

It is a Cunningham number, because it is equal to 101992²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 3744950416 + 6657417649 = 61196^2 + 81593^2 .

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

It is not a de Polignac number, because 10402368065 - 2² = 10402368061 is a prime.

It is a super-2 number, since 2×10402368065² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10402368061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20975 + ... + 145755.

It is an arithmetic number, because the mean of its divisors is an integer number (1560461301).

Almost surely, 2^10402368065 is an apocalyptic number.

It is an amenable number.

10402368065 is a deficient number, since it is larger than the sum of its proper divisors (2081322343).

10402368065 is a wasteful number, since it uses less digits than its factorization.

10402368065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141459.

The product of its (nonzero) digits is 34560, while the sum is 35.

Adding to 10402368065 its reverse (56086320401), we get a palindrome (66488688466).

The spelling of 10402368065 in words is "ten billion, four hundred two million, three hundred sixty-eight thousand, sixty-five".