2145465999 has 24 divisors (see below), whose sum is σ = 3177471024. Its totient is φ = 1394160000.

The previous prime is 2145465989. The next prime is 2145466019. The reversal of 2145465999 is 9995645412.

2145465999 is a `hidden beast` number, since 2 + 1 + 4 + 5 + 46 + 599 + 9 = 666.

It is not a de Polignac number, because 2145465999 - 2¹³ = 2145457807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145465919) 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, 577849 + ... + 581549.

It is an arithmetic number, because the mean of its divisors is an integer number (132394626).

Almost surely, 2^2145465999 is an apocalyptic number.

2145465999 is a deficient number, since it is larger than the sum of its proper divisors (1032005025).

2145465999 is a wasteful number, since it uses less digits than its factorization.

2145465999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5319 (or 5316 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 54.

The square root of 2145465999 is about 46319.1752841088. The cubic root of 2145465999 is about 1289.7549759975.

The spelling of 2145465999 in words is "two billion, one hundred forty-five million, four hundred sixty-five thousand, nine hundred ninety-nine".