2145315322065 has 32 divisors (see below), whose sum is σ = 3678204733056. Its totient is φ = 1063889884160.

The previous prime is 2145315322061. The next prime is 2145315322097. The reversal of 2145315322065 is 5602235135412.

It is not a de Polignac number, because 2145315322065 - 2² = 2145315322061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2145315322061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50659566 + ... + 50701895.

It is an arithmetic number, because the mean of its divisors is an integer number (114943897908).

Almost surely, 2^{2145315322065} is an apocalyptic number.

It is an amenable number.

2145315322065 is a deficient number, since it is larger than the sum of its proper divisors (1532889410991).

2145315322065 is a wasteful number, since it uses less digits than its factorization.

2145315322065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101361569.

The product of its (nonzero) digits is 216000, while the sum is 39.

The spelling of 2145315322065 in words is "two trillion, one hundred forty-five billion, three hundred fifteen million, three hundred twenty-two thousand, sixty-five".