645106224460 has 12 divisors (see below), whose sum is σ = 1354723071408. Its totient is φ = 258042489776.

The previous prime is 645106224457. The next prime is 645106224481. The reversal of 645106224460 is 64422601546.

It is a happy number.

645106224460 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16127655592 + ... + 16127655631.

It is an arithmetic number, because the mean of its divisors is an integer number (112893589284).

Almost surely, 2^645106224460 is an apocalyptic number.

It is an amenable number.

645106224460 is an abundant number, since it is smaller than the sum of its proper divisors (709616846948).

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

645106224460 is a wasteful number, since it uses less digits than its factorization.

645106224460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32255311232 (or 32255311230 counting only the distinct ones).

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

The spelling of 645106224460 in words is "six hundred forty-five billion, one hundred six million, two hundred twenty-four thousand, four hundred sixty".