642612662146 has 16 divisors (see below), whose sum is σ = 1186361838144. Its totient is φ = 254220393744.

The previous prime is 642612662143. The next prime is 642612662147. The reversal of 642612662146 is 641266216246.

It is a happy number.

642612662146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 642612662096 and 642612662105.

It is not an unprimeable number, because it can be changed into a prime (642612662143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1765419220 + ... + 1765419583.

It is an arithmetic number, because the mean of its divisors is an integer number (74147614884).

Almost surely, 2^642612662146 is an apocalyptic number.

642612662146 is a deficient number, since it is larger than the sum of its proper divisors (543749175998).

642612662146 is a wasteful number, since it uses less digits than its factorization.

642612662146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530838825.

The product of its digits is 995328, while the sum is 46.

The spelling of 642612662146 in words is "six hundred forty-two billion, six hundred twelve million, six hundred sixty-two thousand, one hundred forty-six".