2145040005 has 16 divisors (see below), whose sum is σ = 3433210560. Its totient is φ = 1143639168.

The previous prime is 2145039989. The next prime is 2145040031. The reversal of 2145040005 is 5000405412.

It is not a de Polignac number, because 2145040005 - 2⁴ = 2145039989 is a prime.

It is a congruent number.

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, 25854 + ... + 70416.

It is an arithmetic number, because the mean of its divisors is an integer number (214575660).

Almost surely, 2^2145040005 is an apocalyptic number.

It is an amenable number.

2145040005 is a deficient number, since it is larger than the sum of its proper divisors (1288170555).

2145040005 is a wasteful number, since it uses less digits than its factorization.

2145040005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47780.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 2145040005 is about 46314.5765931202. The cubic root of 2145040005 is about 1289.6696077140.

Adding to 2145040005 its reverse (5000405412), we get a palindrome (7145445417).

The spelling of 2145040005 in words is "two billion, one hundred forty-five million, forty thousand, five".