640213402413 has 16 divisors (see below), whose sum is σ = 919609137216. Its totient is φ = 393836755200.

The previous prime is 640213402357. The next prime is 640213402441. The reversal of 640213402413 is 314204312046.

It is not a de Polignac number, because 640213402413 - 2⁹ = 640213401901 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640213402483) 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, 2821095 + ... + 3039572.

It is an arithmetic number, because the mean of its divisors is an integer number (57475571076).

Almost surely, 2^640213402413 is an apocalyptic number.

It is an amenable number.

640213402413 is a deficient number, since it is larger than the sum of its proper divisors (279395734803).

640213402413 is a wasteful number, since it uses less digits than its factorization.

640213402413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5863484.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 640213402413 its reverse (314204312046), we get a palindrome (954417714459).

The spelling of 640213402413 in words is "six hundred forty billion, two hundred thirteen million, four hundred two thousand, four hundred thirteen".