13146235645 has 8 divisors (see below), whose sum is σ = 15875964504. Its totient is φ = 10450000704.

The previous prime is 13146235637. The next prime is 13146235727. The reversal of 13146235645 is 54653264131.

It can be written as a sum of positive squares in 4 ways, for example, as 360506169 + 12785729476 = 18987^2 + 113074^2 .

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 13146235645 - 2³ = 13146235637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13146235598 and 13146235607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8372614 + ... + 8374183.

It is an arithmetic number, because the mean of its divisors is an integer number (1984495563).

Almost surely, 2^13146235645 is an apocalyptic number.

It is an amenable number.

13146235645 is a deficient number, since it is larger than the sum of its proper divisors (2729728859).

13146235645 is a wasteful number, since it uses less digits than its factorization.

13146235645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16746959.

The product of its digits is 259200, while the sum is 40.

Adding to 13146235645 its reverse (54653264131), we get a palindrome (67799499776).

The spelling of 13146235645 in words is "thirteen billion, one hundred forty-six million, two hundred thirty-five thousand, six hundred forty-five".