645733713324 has 48 divisors (see below), whose sum is σ = 1763955518976. Its totient is φ = 179995459200.

The previous prime is 645733713311. The next prime is 645733713329. The reversal of 645733713324 is 423317337546.

It is not an unprimeable number, because it can be changed into a prime (645733713329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93744192 + ... + 93751079.

It is an arithmetic number, because the mean of its divisors is an integer number (36749073312).

Almost surely, 2^645733713324 is an apocalyptic number.

It is an amenable number.

645733713324 is an abundant number, since it is smaller than the sum of its proper divisors (1118221805652).

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

645733713324 is a wasteful number, since it uses less digits than its factorization.

645733713324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187495326 (or 187495324 counting only the distinct ones).

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

The spelling of 645733713324 in words is "six hundred forty-five billion, seven hundred thirty-three million, seven hundred thirteen thousand, three hundred twenty-four".