643013146886 has 64 divisors (see below), whose sum is σ = 1156003176960. Its totient is φ = 264796224000.

The previous prime is 643013146879. The next prime is 643013146921. The reversal of 643013146886 is 688641310346.

643013146886 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×643013146886² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3500471 + ... + 3679581.

It is an arithmetic number, because the mean of its divisors is an integer number (18062549640).

Almost surely, 2^643013146886 is an apocalyptic number.

643013146886 is a deficient number, since it is larger than the sum of its proper divisors (512990030074).

643013146886 is a wasteful number, since it uses less digits than its factorization.

643013146886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179501.

The product of its (nonzero) digits is 1990656, while the sum is 50.

The spelling of 643013146886 in words is "six hundred forty-three billion, thirteen million, one hundred forty-six thousand, eight hundred eighty-six".