640023804222 has 32 divisors (see below), whose sum is σ = 1396526586624. Its totient is φ = 193931188800.

The previous prime is 640023804221. The next prime is 640023804269. The reversal of 640023804222 is 222408320046.

It is a super-3 number, since 3×640023804222³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (640023804221) 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 15 ways as a sum of consecutive naturals, for example, 465138 + ... + 1223274.

It is an arithmetic number, because the mean of its divisors is an integer number (43641455832).

Almost surely, 2^640023804222 is an apocalyptic number.

640023804222 is an abundant number, since it is smaller than the sum of its proper divisors (756502782402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

640023804222 is a wasteful number, since it uses less digits than its factorization.

640023804222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770944.

The product of its (nonzero) digits is 36864, while the sum is 33.

The spelling of 640023804222 in words is "six hundred forty billion, twenty-three million, eight hundred four thousand, two hundred twenty-two".