645414341260 has 192 divisors, whose sum is σ = 1560674304000. Its totient is φ = 222380928000.

The previous prime is 645414341251. The next prime is 645414341267. The reversal of 645414341260 is 62143414546.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (645414341267) 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 63 ways as a sum of consecutive naturals, for example, 269033541 + ... + 269035939.

It is an arithmetic number, because the mean of its divisors is an integer number (8128512000).

Almost surely, 2^645414341260 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 645414341260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (780337152000).

645414341260 is an abundant number, since it is smaller than the sum of its proper divisors (915259962740).

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

645414341260 is a wasteful number, since it uses less digits than its factorization.

645414341260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3632 (or 3630 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 40.

It can be divided in two parts, 64541 and 4341260, that added together give a square (4405801 = 2099²).

The spelling of 645414341260 in words is "six hundred forty-five billion, four hundred fourteen million, three hundred forty-one thousand, two hundred sixty".