641443456213230 has 128 divisors (see below), whose sum is σ = 1685912269708800. Its totient is φ = 154901017128960.

The previous prime is 641443456213229. The next prime is 641443456213303. The reversal of 641443456213230 is 32312654344146.

It is a super-2 number, since 2×641443456213230² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 641443456213230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 88387546 + ... + 95368994.

It is an arithmetic number, because the mean of its divisors is an integer number (13171189607100).

Almost surely, 2^{641443456213230} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 641443456213230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (842956134854400).

641443456213230 is an abundant number, since it is smaller than the sum of its proper divisors (1044468813495570).

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

641443456213230 is a wasteful number, since it uses less digits than its factorization.

641443456213230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6982546.

The product of its (nonzero) digits is 4976640, while the sum is 48.

The spelling of 641443456213230 in words is "six hundred forty-one trillion, four hundred forty-three billion, four hundred fifty-six million, two hundred thirteen thousand, two hundred thirty".