645373828224 has 96 divisors (see below), whose sum is σ = 1865312364240. Its totient is φ = 214176837120.

The previous prime is 645373828223. The next prime is 645373828277. The reversal of 645373828224 is 422828373546.

645373828224 is a `hidden beast` number, since 6 + 4 + 5 + 37 + 382 + 8 + 224 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (645373828223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 972462 + ... + 1495469.

Almost surely, 2^645373828224 is an apocalyptic number.

645373828224 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

645373828224 is an abundant number, since it is smaller than the sum of its proper divisors (1219938536016).

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

645373828224 is a wasteful number, since it uses less digits than its factorization.

645373828224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2468178 (or 2468163 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 54.

The spelling of 645373828224 in words is "six hundred forty-five billion, three hundred seventy-three million, eight hundred twenty-eight thousand, two hundred twenty-four".