645733304076 has 96 divisors (see below), whose sum is σ = 1731983823360. Its totient is φ = 183423803904.

The previous prime is 645733304063. The next prime is 645733304089. The reversal of 645733304076 is 670403337546.

It is an interprime number because it is at equal distance from previous prime (645733304063) and next prime (645733304089).

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 31 ways as a sum of consecutive naturals, for example, 10281120 + ... + 10343736.

It is an arithmetic number, because the mean of its divisors is an integer number (18041498160).

Almost surely, 2^645733304076 is an apocalyptic number.

It is an amenable number.

645733304076 is an abundant number, since it is smaller than the sum of its proper divisors (1086250519284).

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

645733304076 is a wasteful number, since it uses less digits than its factorization.

645733304076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63343 (or 63341 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 48.

The spelling of 645733304076 in words is "six hundred forty-five billion, seven hundred thirty-three million, three hundred four thousand, seventy-six".