645303143106 has 96 divisors (see below), whose sum is σ = 1511237295360. Its totient is φ = 198245878272.

The previous prime is 645303143071. The next prime is 645303143117. The reversal of 645303143106 is 601341303546.

645303143106 is a `hidden beast` number, since 6 + 4 + 530 + 3 + 14 + 3 + 106 = 666.

It is a super-2 number, since 2×645303143106² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 8443975 + ... + 8520053.

It is an arithmetic number, because the mean of its divisors is an integer number (15742055160).

Almost surely, 2^645303143106 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 645303143106, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (755618647680).

645303143106 is an abundant number, since it is smaller than the sum of its proper divisors (865934152254).

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

645303143106 is a wasteful number, since it uses less digits than its factorization.

645303143106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76680 (or 76677 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 645303143106 in words is "six hundred forty-five billion, three hundred three million, one hundred forty-three thousand, one hundred six".