643614852122 has 16 divisors (see below), whose sum is σ = 1057285956672. Its totient is φ = 291413867520.

The previous prime is 643614852109. The next prime is 643614852131. The reversal of 643614852122 is 221258416346.

643614852122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 56911118 + ... + 56922425.

It is an arithmetic number, because the mean of its divisors is an integer number (66080372292).

Almost surely, 2^643614852122 is an apocalyptic number.

643614852122 is a deficient number, since it is larger than the sum of its proper divisors (413671104550).

643614852122 is a wasteful number, since it uses less digits than its factorization.

643614852122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113833813.

The product of its digits is 552960, while the sum is 44.

The spelling of 643614852122 in words is "six hundred forty-three billion, six hundred fourteen million, eight hundred fifty-two thousand, one hundred twenty-two".