643030415452 has 12 divisors (see below), whose sum is σ = 1191497534640. Its totient is φ = 302602548416.

The previous prime is 643030415411. The next prime is 643030415509. The reversal of 643030415452 is 254514030346.

It is a congruent number.

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, 4728164752 + ... + 4728164887.

It is an arithmetic number, because the mean of its divisors is an integer number (99291461220).

Almost surely, 2^643030415452 is an apocalyptic number.

It is an amenable number.

643030415452 is a deficient number, since it is larger than the sum of its proper divisors (548467119188).

643030415452 is a wasteful number, since it uses less digits than its factorization.

643030415452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9456329660 (or 9456329658 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 643030415452 its reverse (254514030346), we get a palindrome (897544445798).

The spelling of 643030415452 in words is "six hundred forty-three billion, thirty million, four hundred fifteen thousand, four hundred fifty-two".