10644959405 has 6 divisors (see below), whose sum is σ = 12774228138. Its totient is φ = 8515782960.

The previous prime is 10644959401. The next prime is 10644959407. The reversal of 10644959405 is 50495944601.

It can be written as a sum of positive squares in 3 ways, for example, as 391169284 + 10253790121 = 19778^2 + 101261^2 .

It is not a de Polignac number, because 10644959405 - 2² = 10644959401 is a prime.

It is a super-2 number, since 2×10644959405² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10644959405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10644959401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 207635 + ... + 253775.

It is an arithmetic number, because the mean of its divisors is an integer number (2129038023).

Almost surely, 2^10644959405 is an apocalyptic number.

It is an amenable number.

10644959405 is a deficient number, since it is larger than the sum of its proper divisors (2129268733).

10644959405 is an frugal number, since it uses more digits than its factorization.

10644959405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92287 (or 46146 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 47.

The spelling of 10644959405 in words is "ten billion, six hundred forty-four million, nine hundred fifty-nine thousand, four hundred five".