643550041106624 has 56 divisors (see below), whose sum is σ = 1282442759719968. Its totient is φ = 320417724119040.

The previous prime is 643550041106597. The next prime is 643550041106627. The reversal of 643550041106624 is 426601140055346.

It is not an unprimeable number, because it can be changed into a prime (643550041106627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8026109 + ... + 36763004.

It is an arithmetic number, because the mean of its divisors is an integer number (22900763566428).

Almost surely, 2^{643550041106624} is an apocalyptic number.

643550041106624 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

643550041106624 is a deficient number, since it is larger than the sum of its proper divisors (638892718613344).

643550041106624 is a wasteful number, since it uses less digits than its factorization.

643550041106624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44790073 (or 44790063 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 47.

The spelling of 643550041106624 in words is "six hundred forty-three trillion, five hundred fifty billion, forty-one million, one hundred six thousand, six hundred twenty-four".