745006645220 has 24 divisors (see below), whose sum is σ = 1564602153408. Its totient is φ = 297985858400.

The previous prime is 745006645217. The next prime is 745006645231. The reversal of 745006645220 is 22546600547.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 683216 + ... + 1398855.

It is an arithmetic number, because the mean of its divisors is an integer number (65191756392).

Almost surely, 2^745006645220 is an apocalyptic number.

It is an amenable number.

745006645220 is an abundant number, since it is smaller than the sum of its proper divisors (819595508188).

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

745006645220 is a wasteful number, since it uses less digits than its factorization.

745006645220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2099971 (or 2099969 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 41.

The spelling of 745006645220 in words is "seven hundred forty-five billion, six million, six hundred forty-five thousand, two hundred twenty".