643201526521112 has 32 divisors (see below), whose sum is σ = 1298870804775600. Its totient is φ = 296839730642304.

The previous prime is 643201526521069. The next prime is 643201526521237. The reversal of 643201526521112 is 211125625102346.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 643201526521112.

It is a congruent 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, 233125787 + ... + 235868682.

Almost surely, 2^{643201526521112} is an apocalyptic number.

It is an amenable number.

643201526521112 is an abundant number, since it is smaller than the sum of its proper divisors (655669278254488).

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

643201526521112 is a wasteful number, since it uses less digits than its factorization.

643201526521112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469007675 (or 469007671 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 643201526521112 in words is "six hundred forty-three trillion, two hundred one billion, five hundred twenty-six million, five hundred twenty-one thousand, one hundred twelve".