645110325546 has 16 divisors (see below), whose sum is σ = 1302995114208. Its totient is φ = 212907698000.

The previous prime is 645110325481. The next prime is 645110325557. The reversal of 645110325546 is 645523011546.

It is a super-3 number, since 3×645110325546³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 645110325498 and 645110325507.

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 7 ways as a sum of consecutive naturals, for example, 532268640 + ... + 532269851.

It is an arithmetic number, because the mean of its divisors is an integer number (81437194638).

Almost surely, 2^645110325546 is an apocalyptic number.

645110325546 is an abundant number, since it is smaller than the sum of its proper divisors (657884788662).

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

645110325546 is a wasteful number, since it uses less digits than its factorization.

645110325546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064538597.

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 645110325546 in words is "six hundred forty-five billion, one hundred ten million, three hundred twenty-five thousand, five hundred forty-six".