2145134313065 has 16 divisors (see below), whose sum is σ = 2582035315200. Its totient is φ = 1710864972672.

The previous prime is 2145134313029. The next prime is 2145134313071. The reversal of 2145134313065 is 5603134315412.

It is a cyclic number.

It is not a de Polignac number, because 2145134313065 - 2¹² = 2145134308969 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2040506 + ... + 2907564.

It is an arithmetic number, because the mean of its divisors is an integer number (161377207200).

Almost surely, 2^{2145134313065} is an apocalyptic number.

It is an amenable number.

2145134313065 is a deficient number, since it is larger than the sum of its proper divisors (436901002135).

2145134313065 is a wasteful number, since it uses less digits than its factorization.

2145134313065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868576.

The product of its (nonzero) digits is 129600, while the sum is 38.

Adding to 2145134313065 its reverse (5603134315412), we get a palindrome (7748268628477).

The spelling of 2145134313065 in words is "two trillion, one hundred forty-five billion, one hundred thirty-four million, three hundred thirteen thousand, sixty-five".