2640441111 has 16 divisors (see below), whose sum is σ = 4389305088. Its totient is φ = 1371657600.

The previous prime is 2640441107. The next prime is 2640441121. The reversal of 2640441111 is 1111440462.

It is not a de Polignac number, because 2640441111 - 2² = 2640441107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640441121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5715010 + ... + 5715471.

It is an arithmetic number, because the mean of its divisors is an integer number (274331568).

Almost surely, 2^2640441111 is an apocalyptic number.

2640441111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2640441111 is a deficient number, since it is larger than the sum of its proper divisors (1748863977).

2640441111 is a wasteful number, since it uses less digits than its factorization.

2640441111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11430502.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 2640441111 is about 51385.2226909644. Note that the first 3 decimals coincide. The cubic root of 2640441111 is about 1382.1616180715.

Adding to 2640441111 its reverse (1111440462), we get a palindrome (3751881573).

The spelling of 2640441111 in words is "two billion, six hundred forty million, four hundred forty-one thousand, one hundred eleven".