2640251415 has 16 divisors (see below), whose sum is σ = 4232880000. Its totient is φ = 1405308192.

The previous prime is 2640251377. The next prime is 2640251417. The reversal of 2640251415 is 5141520462.

It is not a de Polignac number, because 2640251415 - 2⁹ = 2640250903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640251417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168885 + ... + 183854.

It is an arithmetic number, because the mean of its divisors is an integer number (264555000).

Almost surely, 2^2640251415 is an apocalyptic number.

2640251415 is a deficient number, since it is larger than the sum of its proper divisors (1592628585).

2640251415 is a wasteful number, since it uses less digits than its factorization.

2640251415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353246.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 2640251415 is about 51383.3768353151. The cubic root of 2640251415 is about 1382.1285179443.

Adding to 2640251415 its reverse (5141520462), we get a palindrome (7781771877).

The spelling of 2640251415 in words is "two billion, six hundred forty million, two hundred fifty-one thousand, four hundred fifteen".