643060524043020 has 48 divisors (see below), whose sum is σ = 1810977383345760. Its totient is φ = 170491576313856.

The previous prime is 643060524042947. The next prime is 643060524043031. The reversal of 643060524043020 is 20340425060346.

It is a self number, because there is not a number n which added to its sum of digits gives 643060524043020.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30975930085 + ... + 30975950844.

It is an arithmetic number, because the mean of its divisors is an integer number (37728695486370).

Almost surely, 2^{643060524043020} is an apocalyptic number.

643060524043020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

643060524043020 is an abundant number, since it is smaller than the sum of its proper divisors (1167916859302740).

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

643060524043020 is a wasteful number, since it uses less digits than its factorization.

643060524043020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61951881114 (or 61951881112 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 39.

The spelling of 643060524043020 in words is "six hundred forty-three trillion, sixty billion, five hundred twenty-four million, forty-three thousand, twenty".