643266053124 has 24 divisors (see below), whose sum is σ = 1504623949920. Its totient is φ = 213897756864.

The previous prime is 643266053069. The next prime is 643266053147. The reversal of 643266053124 is 421350662346.

It is a happy number.

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, 65527494 + ... + 65537309.

It is an arithmetic number, because the mean of its divisors is an integer number (62692664580).

Almost surely, 2^643266053124 is an apocalyptic number.

It is an amenable number.

643266053124 is an abundant number, since it is smaller than the sum of its proper divisors (861357896796).

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

643266053124 is a wasteful number, since it uses less digits than its factorization.

643266053124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131065219 (or 131065217 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 643266053124 in words is "six hundred forty-three billion, two hundred sixty-six million, fifty-three thousand, one hundred twenty-four".