13105514233145 has 4 divisors (see below), whose sum is σ = 15726617079780. Its totient is φ = 10484411386512.

The previous prime is 13105514233127. The next prime is 13105514233151. The reversal of 13105514233145 is 54133241550131.

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 4519489076281 + 8586025156864 = 2125909^2 + 2930192^2 .

It is a cyclic number.

It is not a de Polignac number, because 13105514233145 - 2¹⁶ = 13105514167609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13105514233099 and 13105514233108.

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, 1310551423310 + ... + 1310551423319.

It is an arithmetic number, because the mean of its divisors is an integer number (3931654269945).

Almost surely, 2^{13105514233145} is an apocalyptic number.

It is an amenable number.

13105514233145 is a deficient number, since it is larger than the sum of its proper divisors (2621102846635).

13105514233145 is an equidigital number, since it uses as much as digits as its factorization.

13105514233145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2621102846634.

The product of its (nonzero) digits is 108000, while the sum is 38.

Adding to 13105514233145 its reverse (54133241550131), we get a palindrome (67238755783276).

The spelling of 13105514233145 in words is "thirteen trillion, one hundred five billion, five hundred fourteen million, two hundred thirty-three thousand, one hundred forty-five".