2145144045065 has 24 divisors (see below), whose sum is σ = 3015415959360. Its totient is φ = 1435078903680.

The previous prime is 2145144045061. The next prime is 2145144045101. The reversal of 2145144045065 is 5605404415412.

It is not a de Polignac number, because 2145144045065 - 2² = 2145144045061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (2145144045061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18171335 + ... + 18289004.

It is an arithmetic number, because the mean of its divisors is an integer number (125642331640).

Almost surely, 2^{2145144045065} is an apocalyptic number.

It is an amenable number.

2145144045065 is a deficient number, since it is larger than the sum of its proper divisors (870271914295).

2145144045065 is an equidigital number, since it uses as much as digits as its factorization.

2145144045065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36460433 (or 36460392 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 41.

The spelling of 2145144045065 in words is "two trillion, one hundred forty-five billion, one hundred forty-four million, forty-five thousand, sixty-five".