640222088000 has 224 divisors, whose sum is σ = 1745837877888. Its totient is φ = 230628864000.

The previous prime is 640222087993. The next prime is 640222088017. The reversal of 640222088000 is 880222046.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9382004 + ... + 9449996.

Almost surely, 2^640222088000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 640222088000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (872918938944).

640222088000 is an abundant number, since it is smaller than the sum of its proper divisors (1105615789888).

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

640222088000 is a wasteful number, since it uses less digits than its factorization.

640222088000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68138 (or 68118 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The spelling of 640222088000 in words is "six hundred forty billion, two hundred twenty-two million, eighty-eight thousand".