645422140410 has 64 divisors (see below), whose sum is σ = 1557485660160. Its totient is φ = 171171601920.

The previous prime is 645422140381. The next prime is 645422140411. The reversal of 645422140410 is 14041224546.

It is not an unprimeable number, because it can be changed into a prime (645422140411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31006086 + ... + 31026894.

It is an arithmetic number, because the mean of its divisors is an integer number (24335713440).

Almost surely, 2^645422140410 is an apocalyptic number.

645422140410 is an abundant number, since it is smaller than the sum of its proper divisors (912063519750).

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

645422140410 is a wasteful number, since it uses less digits than its factorization.

645422140410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26423.

The product of its (nonzero) digits is 30720, while the sum is 33.

Adding to 645422140410 its reverse (14041224546), we get a palindrome (659463364956).

The spelling of 645422140410 in words is "six hundred forty-five billion, four hundred twenty-two million, one hundred forty thousand, four hundred ten".