2640407211 has 12 divisors (see below), whose sum is σ = 4107300288. Its totient is φ = 1624865904.

The previous prime is 2640407201. The next prime is 2640407239. The reversal of 2640407211 is 1127040462.

2640407211 is a `hidden beast` number, since 2 + 6 + 40 + 407 + 211 = 666.

It is not a de Polignac number, because 2640407211 - 2¹⁴ = 2640390827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2640407201) 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 11 ways as a sum of consecutive naturals, for example, 11283675 + ... + 11283908.

It is an arithmetic number, because the mean of its divisors is an integer number (342275024).

Almost surely, 2^2640407211 is an apocalyptic number.

2640407211 is a deficient number, since it is larger than the sum of its proper divisors (1466893077).

2640407211 is a wasteful number, since it uses less digits than its factorization.

2640407211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22567602 (or 22567599 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 2640407211 is about 51384.8928285347. The cubic root of 2640407211 is about 1382.1557029639.

Adding to 2640407211 its reverse (1127040462), we get a palindrome (3767447673).

The spelling of 2640407211 in words is "two billion, six hundred forty million, four hundred seven thousand, two hundred eleven".