640436052302 has 8 divisors (see below), whose sum is σ = 961244528376. Its totient is φ = 320021209512.

The previous prime is 640436052257. The next prime is 640436052343. The reversal of 640436052302 is 203250634046.

640436052302 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98404253 + ... + 98410760.

It is an arithmetic number, because the mean of its divisors is an integer number (120155566047).

Almost surely, 2^640436052302 is an apocalyptic number.

640436052302 is a deficient number, since it is larger than the sum of its proper divisors (320808476074).

640436052302 is a wasteful number, since it uses less digits than its factorization.

640436052302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196816642.

The product of its (nonzero) digits is 103680, while the sum is 35.

Adding to 640436052302 its reverse (203250634046), we get a palindrome (843686686348).

The spelling of 640436052302 in words is "six hundred forty billion, four hundred thirty-six million, fifty-two thousand, three hundred two".