640310412502202 has 16 divisors (see below), whose sum is σ = 1034348686336392. Its totient is φ = 295527569290560.

The previous prime is 640310412502157. The next prime is 640310412502301. The reversal of 640310412502202 is 202205214013046.

It can be written as a sum of positive squares in 4 ways, for example, as 106806251453521 + 533504161048681 = 10334711^2 + 23097709^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12904052 + ... + 38041232.

Almost surely, 2^{640310412502202} is an apocalyptic number.

640310412502202 is a deficient number, since it is larger than the sum of its proper divisors (394038273834190).

640310412502202 is a wasteful number, since it uses less digits than its factorization.

640310412502202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26116913.

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 640310412502202 its reverse (202205214013046), we get a palindrome (842515626515248).

The spelling of 640310412502202 in words is "six hundred forty trillion, three hundred ten billion, four hundred twelve million, five hundred two thousand, two hundred two".