641618070912 has 1024 divisors, whose sum is σ = 2394379008000. Its totient is φ = 166725402624.

The previous prime is 641618070893. The next prime is 641618070913. The reversal of 641618070912 is 219070816146.

641618070912 is a `hidden beast` number, since 6 + 416 + 1 + 80 + 70 + 91 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641618070913) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2267201523 + ... + 2267201805.

It is an arithmetic number, because the mean of its divisors is an integer number (2338260750).

Almost surely, 2^641618070912 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 641618070912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1197189504000).

641618070912 is an abundant number, since it is smaller than the sum of its proper divisors (1752760937088).

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

641618070912 is an equidigital number, since it uses as much as digits as its factorization.

641618070912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427 (or 397 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 641618070912 in words is "six hundred forty-one billion, six hundred eighteen million, seventy thousand, nine hundred twelve".