13143023665 has 8 divisors (see below), whose sum is σ = 15777123840. Its totient is φ = 10510755312.

The previous prime is 13143023603. The next prime is 13143023669. The reversal of 13143023665 is 56632034131.

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

It is a cyclic number.

It is not a de Polignac number, because 13143023665 - 2²³ = 13134635057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13143023665.

It is not an unprimeable number, because it can be changed into a prime (13143023669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442119 + ... + 470908.

It is an arithmetic number, because the mean of its divisors is an integer number (1972140480).

Almost surely, 2^13143023665 is an apocalyptic number.

It is an amenable number.

13143023665 is a deficient number, since it is larger than the sum of its proper divisors (2634100175).

13143023665 is an equidigital number, since it uses as much as digits as its factorization.

13143023665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915911.

The product of its (nonzero) digits is 38880, while the sum is 34.

Adding to 13143023665 its reverse (56632034131), we get a palindrome (69775057796).

The spelling of 13143023665 in words is "thirteen billion, one hundred forty-three million, twenty-three thousand, six hundred sixty-five".