10723243276565 has 4 divisors (see below), whose sum is σ = 12867891931884. Its totient is φ = 8578594621248.

The previous prime is 10723243276513. The next prime is 10723243276583. The reversal of 10723243276565 is 56567234232701.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7178932498609 + 3544310777956 = 2679353^2 + 1882634^2 .

It is a cyclic number.

It is not a de Polignac number, because 10723243276565 - 2³² = 10718948309269 is a prime.

It is a super-2 number, since 2×10723243276565² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1072324327652 + ... + 1072324327661.

It is an arithmetic number, because the mean of its divisors is an integer number (3216972982971).

Almost surely, 2^{10723243276565} is an apocalyptic number.

It is an amenable number.

10723243276565 is a deficient number, since it is larger than the sum of its proper divisors (2144648655319).

10723243276565 is an equidigital number, since it uses as much as digits as its factorization.

10723243276565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2144648655318.

The product of its (nonzero) digits is 12700800, while the sum is 53.

The spelling of 10723243276565 in words is "ten trillion, seven hundred twenty-three billion, two hundred forty-three million, two hundred seventy-six thousand, five hundred sixty-five".