645110246512 has 20 divisors (see below), whose sum is σ = 1290220494016. Its totient is φ = 312150119040.

The previous prime is 645110246509. The next prime is 645110246513. The reversal of 645110246512 is 215642011546.

645110246512 is an admirable number.

It is a super-3 number, since 3×645110246512³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645110246513) 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 3 ways as a sum of consecutive naturals, for example, 650312253 + ... + 650313244.

Almost surely, 2^645110246512 is an apocalyptic number.

645110246512 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

645110246512 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

645110246512 is a wasteful number, since it uses less digits than its factorization.

645110246512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300625536 (or 1300625530 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 645110246512 in words is "six hundred forty-five billion, one hundred ten million, two hundred forty-six thousand, five hundred twelve".