2564040206 has 128 divisors (see below), whose sum is σ = 5081674752. Its totient is φ = 943488000.

The previous prime is 2564040203. The next prime is 2564040217. The reversal of 2564040206 is 6020404652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564040203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19572761 + ... + 19572891.

It is an arithmetic number, because the mean of its divisors is an integer number (39700584).

Almost surely, 2^2564040206 is an apocalyptic number.

2564040206 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2564040206 is a deficient number, since it is larger than the sum of its proper divisors (2517634546).

2564040206 is a wasteful number, since it uses less digits than its factorization.

2564040206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 2564040206 is about 50636.3526135128. The cubic root of 2564040206 is about 1368.7000306577.

Adding to 2564040206 its reverse (6020404652), we get a palindrome (8584444858).

The spelling of 2564040206 in words is "two billion, five hundred sixty-four million, forty thousand, two hundred six".